"Watching your daughter grow has been the coolest thing in my life," Christian reflected in a February interview with E! News. "Watching her develop a personality, start to notice the world, smile, move. It's been awesome."

"I love her so much," the 29-year-old continued. "My wife loves her so much."

And as Colette keeps growing, he shared that it's clear their baby girl is both a Culpo and a McCaffrey.

"Some days I'm like, 'Man, she's my twin,'" he explained. "Other days, I see she's a Culpo. I can see the eyebrows and the eyelashes."

"And then from a personality standpoint, we're very similar, but different in a lot of ways," he added. "It's starting to come out more, and we're noticing different things every day."

For Olivia's part, motherhood has been an unforgettable chapter in her life.

"It's been so fun," she shared on The Squeeze podcast in October. "Every day is so different and I'm really just trying to sit in because I know it goes by so fast. Everybody says these are the days that go by quicker than you could have ever imagined."

For a closer look at Olivia and Christian's game-winning family, keep reading.