01of 52Alicia KeysAlicia Keys.Amy Sussman/Getty ImagesHappy Birthday! The singer celebrates the big 4-0 on Jan. 25.02of 52Chris EvansNoam Galai/GettyCaptain America turns 40 on June 13.03of 52Justin TimberlakeJustin Timberlake.Larry Busacca/GettyThe father of two turns the big 4-0 on Jan. 31.04of 52Beyoncé KnowlesBeyonce Knowles-Carter.Dave Benett/WireImageQueen B celebrates on Sept. 4.05of 52Kelly RowlandKelly Rowland.Cindy Ord/GettyBeyoncé’s bestie also turns 40 this year, on Feb. 11.06of 52Jessica AlbaJessica Alba.Phillip Faraone/GettyLet’s get Honest: Alba turns 40 on April 28.07of 52Britney SpearsBritney Spears.Kevin Mazur/WireImageSpears was “Born to Make You Happy” on Dec. 2.08of 52Meghan MarkleCNNThe Duchess of Sussex will celebrate the milestone on Aug. 4.09of 52Amy SchumerAmy Schumer.Noam Galai/WireImageNothing funny here: Schumer is 40 on June 1.10of 52Natalie PortmanDavid Fisher/ShutterstockThe actress will be 40 on June 9.11of 52Nicole RichieChris Pizzello/Invision/AP/ShutterstockRichie will blow out the candles on Sept. 21.12of 52Rami MalekMike Marsland/WireImageThe Oscar winner celebrates on May 12.13of 52Serena WilliamsJean Catuffe/Getty ImagesThe tennis champ swings into 40 on Sept. 26.14of 52Roger FedererJP Yim/Getty.Federer turns 40 just weeks prior, on Aug. 8.15of 52Tom HiddlestonTom Dymond/ShutterstockTheAvengersstar turns 40 on Feb. 9.16of 52Danielle FishelPaul Archuleta/GettyTheBoy Meets Worldstar is 40 on May 5.17of 52Sienna MillerKristin Callahan/ACE Pictures/ShutterstockMiller’s birthday is amongh the last of the year, on Dec. 28.18of 52PitbullGary Hershorn-Pool/Getty ImagesDon’t Stop the Party: Pitbull turned 40 on Jan. 15.19of 52Taylor KitschFaye Sadou/MediaPunchClear eyes, full hearts, can’t forget the April 8 birthday for the actor.20of 52Krysten RitterTrust us: Ritter turns 40 on Dec. 16.21of 52Christina MilianChristina Milian.Tom Vickers/MOVI Inc.The mom-to-be will have even more to celebrate on Sept. 26 this year.22of 52Julia StilesJulia Stiles.Santiago Felipe/GettySave the Last Dance for Stiles' birthday celebration, on March 28.23of 52Rachel BilsonJesse Grant/GettyHard to believe Summer will be toasting her 40th this summer, on Aug. 25.24of 52Jennifer HudsonJennifer Hudson.Steven Ferdman/Getty ImagesYou’re gonna love that the Oscar winner turns 40 on Sept. 12.25of 52Joseph Gordon-LevittJoseph Gordon-Levitt.The Tonight Show with Jimmy Fallon/YouTubeWe don’t hate that the actor is turning 40 on Feb. 17.26of 52Larisa OleynikTibrina Hobson/GettyHis10 Things I Hate About Youcostar turns 40 on June 7.27of 52Susan Kelechi WatsonIsaiah Trickey/FilmMagicThis Isthe actress' birthdate: Nov. 11.28of 52Leslie Odom Jr.Disney+Odom’s Burr-thday is Aug. 6.29of 52Jonathan Taylor ThomasMatt Baron/BEImagesThe child star celebrates four decades on Sept. 8.30of 52Chad Michael MurrayStefanie Keenan/Getty Images for GQ.Another young star grows older: Murray’s birthday is Aug. 24.31of 52Paris HiltonJason Merritt/FilmMagicThe stars aren’t blind to Hilton’s big day of Feb. 17.32of 52Taylor KinneyNBCThe actor’s 40th is on July 15.33of 52Michelle DockeryMichelle Dockery.Theo Wargo/GettyIf only she could be back at Downton to celebrate her 40th on Dec. 15.34of 52Chrishell StauseChrishell Stause.John Shearer/GettySelling Sunset’s breakout star turns 40 on July 21.35of 52Kunal NayyarAmanda Edwards/WireImageThe actor will mark his birthday with aBangon April 30.36of 52Josh GadJosh Gad.Matt Winkelmeyer/GettyOlaf is all grown up: Gad turns 40 on Feb. 23.37of 52Alexis BledelSteve Granitz/WireImageCan you believe Rory Gilmore will be 40 on Sept. 16?38of 52Josh GrobanJosh Groban.John Woifsohn/GettyPerhaps the singer will serenade himself when he turns 40 on Feb. 27.39of 52Hayden ChristensenHayden Christensen.Richard Harbaugh/Disneyland ResortTheStar Warsstar turns 40 on April 19.40of 52Elijah WoodAstrid Stawiarz/Getty.Wood’s big day is Jan. 28.41of 52Bryce Dallas HowardBryce Dallas Howard on Her Feature Directorial Debut, ‘Dads’.Getty ImagesThe actress marks another trip around the sun on March 2.42of 52Uzo AdubaGregg DeGuire/FilmMagicNothing crazy about this: Aduba turns 40 on Feb. 10.43of 52Patrick J. AdamsTibrina Hobson/Getty.TheSuitsstar celebrates 40 on Aug. 27.44of 52Abigail SpencerJoe Scarnici/Getty Images for CadillacHis costar is 40, too, this year, on Aug. 4.45of 52Keyshia ColeMatt Baron/REX/Shutterstock.Singer Cole turns 40 on Oct. 15.46of 52Jesse WilliamsBruce Glikas/WireImageWilliams celebrates the big 4-0 on Aug. 5.47of 52Alessandra AmbrósioBACKGRIDThe Victoria’s Secret Angel flies into 40 on Feb. 11.48of 52Adriana LimaDaniele Venturelli/WireImageHer fellow supermodel is also 40 this year, on June 12.49of 52Meagan GoodIt’ll be a Good day when the actress turns 40 on Aug. 8.50of 52Rachel PlattenJohn Salangsang/Variety/REX/Shutterstock.We’ll all sing “Fight Song” in her honor on May 20.51of 52Caterina ScorsoneRandy Shropshire/GettyTheGrey’s Anatomystar turns 40 on Oct. 16.52of 52Beverley MitchellRodin Eckenroth/GettyThe7th Heavenstar turned 40 on Jan. 22.

01of 52Alicia KeysAlicia Keys.Amy Sussman/Getty ImagesHappy Birthday! The singer celebrates the big 4-0 on Jan. 25.

01of 52

Alicia Keys

Alicia Keys.Amy Sussman/Getty Images

Alicia Keys

Happy Birthday! The singer celebrates the big 4-0 on Jan. 25.

02of 52Chris EvansNoam Galai/GettyCaptain America turns 40 on June 13.

02of 52

Chris Evans

Noam Galai/Getty

Chris Evans

Captain America turns 40 on June 13.

03of 52Justin TimberlakeJustin Timberlake.Larry Busacca/GettyThe father of two turns the big 4-0 on Jan. 31.

03of 52

Justin Timberlake

Justin Timberlake.Larry Busacca/Getty

justin timberlake

The father of two turns the big 4-0 on Jan. 31.

04of 52Beyoncé KnowlesBeyonce Knowles-Carter.Dave Benett/WireImageQueen B celebrates on Sept. 4.

04of 52

Beyoncé Knowles

Beyonce Knowles-Carter.Dave Benett/WireImage

Beyonce Knowles

Queen B celebrates on Sept. 4.

05of 52Kelly RowlandKelly Rowland.Cindy Ord/GettyBeyoncé’s bestie also turns 40 this year, on Feb. 11.

05of 52

Kelly Rowland

Kelly Rowland.Cindy Ord/Getty

kelly rowland

Beyoncé’s bestie also turns 40 this year, on Feb. 11.

06of 52Jessica AlbaJessica Alba.Phillip Faraone/GettyLet’s get Honest: Alba turns 40 on April 28.

06of 52

Jessica Alba

Jessica Alba.Phillip Faraone/Getty

Jessica Alba

Let’s get Honest: Alba turns 40 on April 28.

07of 52Britney SpearsBritney Spears.Kevin Mazur/WireImageSpears was “Born to Make You Happy” on Dec. 2.

07of 52

Britney Spears

Britney Spears.Kevin Mazur/WireImage

Clive Davis' and the Recording Academy’s 2017 Pre-GRAMMY Gala and Salute To Industry Icons Honoring Debra Lee - Red Carpet

Spears was “Born to Make You Happy” on Dec. 2.

08of 52Meghan MarkleCNNThe Duchess of Sussex will celebrate the milestone on Aug. 4.

08of 52

Meghan Markle

CNN

https://twitter.com/CNNHeroes/status/1338300441998848008

The Duchess of Sussex will celebrate the milestone on Aug. 4.

09of 52Amy SchumerAmy Schumer.Noam Galai/WireImageNothing funny here: Schumer is 40 on June 1.

09of 52

Amy Schumer

Amy Schumer.Noam Galai/WireImage

amy schumer

Nothing funny here: Schumer is 40 on June 1.

10of 52Natalie PortmanDavid Fisher/ShutterstockThe actress will be 40 on June 9.

10of 52

Natalie Portman

David Fisher/Shutterstock

Natalie Portman Gift Guide

The actress will be 40 on June 9.

11of 52Nicole RichieChris Pizzello/Invision/AP/ShutterstockRichie will blow out the candles on Sept. 21.

11of 52

Nicole Richie

Chris Pizzello/Invision/AP/Shutterstock

Nicole Richie presents the award for top Billboard 200 album at the Billboard Music Awards

Richie will blow out the candles on Sept. 21.

12of 52Rami MalekMike Marsland/WireImageThe Oscar winner celebrates on May 12.

12of 52

Rami Malek

Mike Marsland/WireImage

Rami Malek

The Oscar winner celebrates on May 12.

13of 52Serena WilliamsJean Catuffe/Getty ImagesThe tennis champ swings into 40 on Sept. 26.

13of 52

Serena Williams

Jean Catuffe/Getty Images

2018 French Open - Day Three

The tennis champ swings into 40 on Sept. 26.

14of 52Roger FedererJP Yim/Getty.Federer turns 40 just weeks prior, on Aug. 8.

14of 52

Roger Federer

JP Yim/Getty.

tennis-stars-roger-federer.jpg

Federer turns 40 just weeks prior, on Aug. 8.

15of 52Tom HiddlestonTom Dymond/ShutterstockTheAvengersstar turns 40 on Feb. 9.

15of 52

Tom Hiddleston

Tom Dymond/Shutterstock

Tom Hiddleston announces the five nominees for the EE Rising Star Award ahead of the 2020 EE British Academy Film Awards: Awkwafina, Jack Lowden, Kaitlyn Dever, Kelvin Harrison Jr and Micheal Ward. Voting is now open at ee.co.uk/BAFTA BAFTA EE Rising Star Nominee Announcement photocall, The Savoy Hotel, London, UK - 06 Jan 2020

TheAvengersstar turns 40 on Feb. 9.

16of 52Danielle FishelPaul Archuleta/GettyTheBoy Meets Worldstar is 40 on May 5.

16of 52

Danielle Fishel

Paul Archuleta/Getty

Danielle Fishel

TheBoy Meets Worldstar is 40 on May 5.

17of 52Sienna MillerKristin Callahan/ACE Pictures/ShutterstockMiller’s birthday is amongh the last of the year, on Dec. 28.

17of 52

Sienna Miller

Kristin Callahan/ACE Pictures/Shutterstock

Sienna Miller 72nd Annual Writers Guild Awards, Arrivals, Edison Ballroom, New York, USA - 01 Feb 2020

Miller’s birthday is amongh the last of the year, on Dec. 28.

18of 52PitbullGary Hershorn-Pool/Getty ImagesDon’t Stop the Party: Pitbull turned 40 on Jan. 15.

18of 52

Pitbull

Gary Hershorn-Pool/Getty Images

Pitbull performs live from Times Square during 2021 New Year’s Eve celebrations

Don’t Stop the Party: Pitbull turned 40 on Jan. 15.

19of 52Taylor KitschFaye Sadou/MediaPunchClear eyes, full hearts, can’t forget the April 8 birthday for the actor.

19of 52

Taylor Kitsch

Faye Sadou/MediaPunch

the Paramount Network Launch Party

Clear eyes, full hearts, can’t forget the April 8 birthday for the actor.

20of 52Krysten RitterTrust us: Ritter turns 40 on Dec. 16.

20of 52

Krysten Ritter

Actress Krysten Ritter attends the 18th Costume Designer awards

Trust us: Ritter turns 40 on Dec. 16.

21of 52Christina MilianChristina Milian.Tom Vickers/MOVI Inc.The mom-to-be will have even more to celebrate on Sept. 26 this year.

21of 52

Christina Milian

Christina Milian.Tom Vickers/MOVI Inc.

Christina Milian

The mom-to-be will have even more to celebrate on Sept. 26 this year.

22of 52Julia StilesJulia Stiles.Santiago Felipe/GettySave the Last Dance for Stiles' birthday celebration, on March 28.

22of 52

Julia Stiles

Julia Stiles.Santiago Felipe/Getty

Julia stiles

Save the Last Dance for Stiles' birthday celebration, on March 28.

23of 52Rachel BilsonJesse Grant/GettyHard to believe Summer will be toasting her 40th this summer, on Aug. 25.

23of 52

Rachel Bilson

Jesse Grant/Getty

Rachel Bilson

Hard to believe Summer will be toasting her 40th this summer, on Aug. 25.

24of 52Jennifer HudsonJennifer Hudson.Steven Ferdman/Getty ImagesYou’re gonna love that the Oscar winner turns 40 on Sept. 12.

24of 52

Jennifer Hudson

Jennifer Hudson.Steven Ferdman/Getty Images

Jennifer Hudson

You’re gonna love that the Oscar winner turns 40 on Sept. 12.

25of 52Joseph Gordon-LevittJoseph Gordon-Levitt.The Tonight Show with Jimmy Fallon/YouTubeWe don’t hate that the actor is turning 40 on Feb. 17.

25of 52

Joseph Gordon-Levitt

Joseph Gordon-Levitt.The Tonight Show with Jimmy Fallon/YouTube

Joseph Gordon-Levitt gushes about being a dad

We don’t hate that the actor is turning 40 on Feb. 17.

26of 52Larisa OleynikTibrina Hobson/GettyHis10 Things I Hate About Youcostar turns 40 on June 7.

26of 52

Larisa Oleynik

Tibrina Hobson/Getty

Larisa Oleynik

His10 Things I Hate About Youcostar turns 40 on June 7.

27of 52Susan Kelechi WatsonIsaiah Trickey/FilmMagicThis Isthe actress' birthdate: Nov. 11.

27of 52

Susan Kelechi Watson

Isaiah Trickey/FilmMagic

Susan Kelechi Watson

This Isthe actress' birthdate: Nov. 11.

28of 52Leslie Odom Jr.Disney+Odom’s Burr-thday is Aug. 6.

28of 52

Leslie Odom Jr.

Disney+

Leslie Odom Jr

Odom’s Burr-thday is Aug. 6.

29of 52Jonathan Taylor ThomasMatt Baron/BEImagesThe child star celebrates four decades on Sept. 8.

29of 52

Jonathan Taylor Thomas

Matt Baron/BEImages

JONATHAN TAYLOR THOMAS

The child star celebrates four decades on Sept. 8.

30of 52Chad Michael MurrayStefanie Keenan/Getty Images for GQ.Another young star grows older: Murray’s birthday is Aug. 24.

30of 52

Chad Michael Murray

Stefanie Keenan/Getty Images for GQ.

chad-michael-murray.jpg

Another young star grows older: Murray’s birthday is Aug. 24.

31of 52Paris HiltonJason Merritt/FilmMagicThe stars aren’t blind to Hilton’s big day of Feb. 17.

31of 52

Paris Hilton

Jason Merritt/FilmMagic

Image

The stars aren’t blind to Hilton’s big day of Feb. 17.

32of 52Taylor KinneyNBCThe actor’s 40th is on July 15.

32of 52

Taylor Kinney

NBC

Chicago Fire

The actor’s 40th is on July 15.

33of 52Michelle DockeryMichelle Dockery.Theo Wargo/GettyIf only she could be back at Downton to celebrate her 40th on Dec. 15.

33of 52

Michelle Dockery

Michelle Dockery.Theo Wargo/Getty

Michelle Dockery attends “The Gentlemen” New York Photo Call at the Whitby Hotel on January 11, 2020

If only she could be back at Downton to celebrate her 40th on Dec. 15.

34of 52Chrishell StauseChrishell Stause.John Shearer/GettySelling Sunset’s breakout star turns 40 on July 21.

34of 52

Chrishell Stause

Chrishell Stause.John Shearer/Getty

Chrishell Hartley

Selling Sunset’s breakout star turns 40 on July 21.

35of 52Kunal NayyarAmanda Edwards/WireImageThe actor will mark his birthday with aBangon April 30.

35of 52

Kunal Nayyar

Amanda Edwards/WireImage

pre-emmy-t

The actor will mark his birthday with aBangon April 30.

36of 52Josh GadJosh Gad.Matt Winkelmeyer/GettyOlaf is all grown up: Gad turns 40 on Feb. 23.

36of 52

Josh Gad

Josh Gad.Matt Winkelmeyer/Getty

Josh Gad

Olaf is all grown up: Gad turns 40 on Feb. 23.

37of 52Alexis BledelSteve Granitz/WireImageCan you believe Rory Gilmore will be 40 on Sept. 16?

37of 52

Alexis Bledel

Steve Granitz/WireImage

The 23rd Annual Critics' Choice Awards - Arrivals

Can you believe Rory Gilmore will be 40 on Sept. 16?

38of 52Josh GrobanJosh Groban.John Woifsohn/GettyPerhaps the singer will serenade himself when he turns 40 on Feb. 27.

38of 52

Josh Groban

Josh Groban.John Woifsohn/Getty

josh groban

Perhaps the singer will serenade himself when he turns 40 on Feb. 27.

39of 52Hayden ChristensenHayden Christensen.Richard Harbaugh/Disneyland ResortTheStar Warsstar turns 40 on April 19.

39of 52

Hayden Christensen

Hayden Christensen.Richard Harbaugh/Disneyland Resort

Hayden Christensen

TheStar Warsstar turns 40 on April 19.

40of 52Elijah WoodAstrid Stawiarz/Getty.Wood’s big day is Jan. 28.

40of 52

Elijah Wood

Astrid Stawiarz/Getty.

Elijah Wood

Wood’s big day is Jan. 28.

41of 52Bryce Dallas HowardBryce Dallas Howard on Her Feature Directorial Debut, ‘Dads’.Getty ImagesThe actress marks another trip around the sun on March 2.

41of 52

Bryce Dallas Howard

Bryce Dallas Howard on Her Feature Directorial Debut, ‘Dads’.Getty Images

Bryce Dallas Howard at an awards show wearing a black and silver gown.

The actress marks another trip around the sun on March 2.

42of 52Uzo AdubaGregg DeGuire/FilmMagicNothing crazy about this: Aduba turns 40 on Feb. 10.

42of 52

Uzo Aduba

Gregg DeGuire/FilmMagic

uzo aduba

Nothing crazy about this: Aduba turns 40 on Feb. 10.

43of 52Patrick J. AdamsTibrina Hobson/Getty.TheSuitsstar celebrates 40 on Aug. 27.

43of 52

Patrick J. Adams

Tibrina Hobson/Getty.

LOS ANGELES, CA - DECEMBER 01: Patrick J. Adams attends SAG-AFTRA Foundation’s conversations for ‘Suits’ at SAG-AFTRA Foundation Screening Room on December 1, 2016 in Los Angeles, California. (Photo by Tibrina Hobson/Getty Images)

TheSuitsstar celebrates 40 on Aug. 27.

44of 52Abigail SpencerJoe Scarnici/Getty Images for CadillacHis costar is 40, too, this year, on Aug. 4.

44of 52

Abigail Spencer

Joe Scarnici/Getty Images for Cadillac

Cadillac Celebrates Oscar Week 2020

His costar is 40, too, this year, on Aug. 4.

45of 52Keyshia ColeMatt Baron/REX/Shutterstock.Singer Cole turns 40 on Oct. 15.

45of 52

Keyshia Cole

Matt Baron/REX/Shutterstock.

keyshia-cole.jpg

Singer Cole turns 40 on Oct. 15.

46of 52Jesse WilliamsBruce Glikas/WireImageWilliams celebrates the big 4-0 on Aug. 5.

46of 52

Jesse Williams

Bruce Glikas/WireImage

Jesse Williams

Williams celebrates the big 4-0 on Aug. 5.

47of 52Alessandra AmbrósioBACKGRIDThe Victoria’s Secret Angel flies into 40 on Feb. 11.

47of 52

Alessandra Ambrósio

BACKGRID

Alessandra Ambrosio

The Victoria’s Secret Angel flies into 40 on Feb. 11.

48of 52Adriana LimaDaniele Venturelli/WireImageHer fellow supermodel is also 40 this year, on June 12.

48of 52

Adriana Lima

Daniele Venturelli/WireImage

Adriana Lima

Her fellow supermodel is also 40 this year, on June 12.

49of 52Meagan GoodIt’ll be a Good day when the actress turns 40 on Aug. 8.

49of 52

Meagan Good

BET Awards 2019 - Arrivals

It’ll be a Good day when the actress turns 40 on Aug. 8.

50of 52Rachel PlattenJohn Salangsang/Variety/REX/Shutterstock.We’ll all sing “Fight Song” in her honor on May 20.

50of 52

Rachel Platten

John Salangsang/Variety/REX/Shutterstock.

rachel-platten1.jpg

We’ll all sing “Fight Song” in her honor on May 20.

51of 52Caterina ScorsoneRandy Shropshire/GettyTheGrey’s Anatomystar turns 40 on Oct. 16.

51of 52

Caterina Scorsone

Randy Shropshire/Getty

Caterina Scorsone

TheGrey’s Anatomystar turns 40 on Oct. 16.

52of 52Beverley MitchellRodin Eckenroth/GettyThe7th Heavenstar turned 40 on Jan. 22.

52of 52

Beverley Mitchell

Rodin Eckenroth/Getty

Beverley Mitchell

The7th Heavenstar turned 40 on Jan. 22.

source: people.com