"Happy Coziest time of the year!" Olivia wrote on Instagram alongside the snaps. "Love you all."
And of course, their home is just as cozy: She showed off their living room complete with a fireplace, rustic wreath and red and green stockings contrasting with her stark white mantle and bookcase in another post.
Although Olivia has shared how much she loves this new chapter of her life, it's not come without some adjustments.
"There's totally a shift," the 33-year-old said in an October episode of The Squeeze podcast. "Whether or not you want there to be or not, you have somebody that's physically dependent on you. So, I'm not going to sugarcoat it: Yeah, it's scary."
It was especially though thinking she may need to put her career on pause.
"I'm just kind of a worry wart that way, like I'm very ambitious," she added. "But it's very common."
As the family prepares for Santa Claus to come to town, read on for more sweet photos of Olivia and Christian's daughter.
One week after announcing she gave birth, Olivia Culpo shared an adorable time-lapse video of her baby bump, which ended with a shot of her cuddling her and husband Christian McCaffrey's little one Colette.
Olivia felt lucky that her mom Susan Curran stepped in to help her with baby Colette as she adjusted to the first month of her motherhood journey.
The former Miss Universe said of her kiddo's grandma on Instagram at the time, "I can only hope to be as good as her."
Olivia and Christian—who tied the knot in June 2024—weren't the only ones excited to welcome a new addition to the family.
The model shared several clips of her pup Oliver proving he was thrilled for Colette's arrival as well, including one of the trio taking a nap together in bed.
More proof that Oliver is going to be an excellent big brother? The doggo gave his baby sister kisses while she cozied up her in carrier.
Colette got some much-needed rest while cuddling in her mom's arms on a cozy armchair.
Being an aunt seems to come naturally for Olivia's sister Sophia Culpo, who looked at ease as she took her niece for a scene nature walk.