The couple named their first child together Briar Rose which, as the dad pointed out, wasn't just a coincidence.
He told the Hallmark Channel's Home And Family section: "The original Sleeping Beauty was called Briar Rose.
"We both love all things Disney, but Rachel especially was very keen on the name."
Bilson, most known for her role as Summer in The OC, gave birth to her daughter in October 2014.
During the interview, Christensen also admitted the couple's love of Disney means there's often Disney songs playing in their house.
They have remained very private about their daughter since she was born, having never published any photos showing her face.
In August 2015, Bilson posted the first picture of her daughter with Christensen blowing bubbles in a park.
In the photo, you can only see Briar-Rose's floral hat and hand resting on her dad's leg.