Who knew Rachel Bilson loved Disney so much?!

The oh-so-pregnant has star finally popped and is a mommy now! The Hart of Dixie star and boyfriend Hayden Christensen welcomed a baby girl, whom they named Briar Rose, which is an ode to the 1959 Disney classic Sleeping Beauty as well as the Grimm's fable from 1812.

In May news broke that the the actors, who are both 33-years-old, were expecting a baby. "They've both talked about this for awhile and are so excited," a source told Us magazine. "Everyone is beyond thrilled for them."

First Ashlee Simpson's Jungle Book baby, Bronx Mowgli -- and now this! Celeb parents love Disney-themed names!