Cayley and Brandon Jenner.Photo:Monse Escobedo/The Jenners

Brandon and Cayley Jenner Expecting/Pregnancy

Monse Escobedo/The Jenners

CayleyandBrandon Jenner’s family is growing again!

Cayley, 38, took two pregnancy tests before spilling the news to Brandon, 42, in December.

“When I went to tell Brandon that night as we were getting ready for bed he totally beat me to the punch,” Cayley recalls to PEOPLE. “I had the tests in my pocket and I was going to just lay them down as he was brushing his teeth, but before I could do it, he looked at me and said, ‘So how pregnant do you think you are?’ I was floored.”

The expectant mom pulled out the tests and wondered if her husband had seen the tests' packaging in the trash, which he had not, before they laughed, hugged and kissed to celebrate.

“Then, we laid in bed and laughed hysterically thinking about how wild it would be if we had twins again,” Cayley says, adding that Brandon guessed correctly because of timing. “We conceived on Thanksgiving, which is so cute and special. I feel so grateful to get to do it all over again.”

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Brandon and Cayley Jenner Expecting/Pregnancy

The couple is already parents to twin boysBo and Sam, 4, and daughterEva, 8, the latter of whom they informed first about the pregnancy.

Meanwhile, the boys have noticed their mom’s “growing belly” and are “really excited to be big brothers.”

Brandon and Cayley Jenner Expecting/Pregnancy

Brandon and Cayley Jenner Expecting/Pregnancy

Food cravings have been top of mind for Cayley during this pregnancy.

“I had really bad morning sickness from weeks six to 12, so it was a lot of bagels, apples and cereal,” she says. “My main craving has been citrus. I can’t get enough. You can see me at the farmers’ market buying dozens of tangerines and oranges each week. Sandwiches are also a big hit."

“I tend to have more of a sweet tooth while pregnant, so I’ve been enjoying tons of fruit, granola, yogurt and berries. Yum, now I’m hungry again!”

source: people.com