ET's Keltie Knight chatted with the 37-year-old actress at the This Bar Saves Lives, a company she's co-founder of, event in Los Angeles on Thursday, where she revealed that she almost wore jeans to the courthouse.
"I remember my husband picked out my outfit. I thought we were going to go in jeans. I didn't want to have high expectations," Bell recalled. "We went to the courthouse on a Tuesday morning and I was like, 'Okay, let's just go.' And he was like, 'Well I'm going to wear a tuxedo,' and I was like, 'Okay.' And I said I don't know what to wear and he's like, 'I'll pick it out.'"
Kristen Bell Gets 'Choked Up' Talking About Kids at March For Our Lives Protest (Exclusive)
"He went into my closet, picked out this black jumpsuit and then we got into his Lincoln and he had made a playlist of all my favorite songs," she continued. "It was like Brett Dennen and Tyrone Wells at the time. It was a whole bunch of beautiful songs. And then we just drove there and that was it, but it was so simple and wonderful."
The couple started dating in 2007 and tied the knot at the Beverly Hills County Clerk's Office on October 17, 2013. They are now parents to daughters Lincoln, 5, and Delta, 3.
Bell, who will reprise her role as Anna in the Frozen sequel, also dished on the catchy songs we can expect from the forthcoming animated Disney film.
"I can’t say much. What I will say is this, I've heard quite a few of the songs [and] they are still in my head. Let me put it that way," she shared. "I mean, look, I don't know that I could ever say [that] something's gonna outdo 'Let It Go' [be]cause that might truly be the song of the century. But there will be some contenders."