Earlier this week, sources revealed to ET that the couple was planning to wed in Napa, where they celebrated their engagement, in a "small and intimate" ceremony, with only their "closest family and friends."
On Sunday, Davis' siblings, Conn Davis Jr. and Rachel Davis Thomas, took to Instagram to show off the ceremony's adorable ring bearer, the model's nephew, Christian.
In February, the 26-year-old model opened up to ET about her big day, telling us how excited she was to have chosen her Vera Wang gown.
"We're sort of in the preliminary stages," she said at the time of their current wedding plans. "I don't know if I'll give too many details before the actual day, but I'm very excited that she's designing the dress."
The Sports Illustrated swimsuit model also toldHealth magazine that she planned to keep things simple on her big day.
"I'm chill. I just want it to be a fun day, not all the fuss," she told the magazine. "I don't want to go overboard -- it's not about the place settings. I won't get stressed out about that, 'cause I could just care less."
"I think finding someone you truly don't have to change for -- not even a single part of you -- makes you rise to the occasion," she added. "You want to find someone who is way better than you, or you think so. You're like, 'This person is going to bring out the best in me, and I'm going to be a way better person this year.'"