While the movie continues to be a hit everywhere it goes, the impact of the film on one of its big stars is still something that takes her aback. But how much has changed for Idina Menzel since her part in Disney's Frozen?

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Menzel sat down with Billboard on Friday to talk about her recent career swing thanks to the animated movie and how her life has changed due to the massive popularity of the songs and entire film. She said it recently hit when a dozen A BroaderWay Choir members came onstage to sing a mash-up of Wicked's Defying Gravity and Frozen's Let it Go.

"I wasn't prepared for that!" she said. "If you ever need to be reminded of taking risks, just spend a little time with these wonderful women who come out of this city into the country and escape from their everyday life. They're my inspiration. Thank you."

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She also talked about what it was like to learn that her breakout hit, Let It Go, made it big at the awards shows and that the movie would become so much more than she thought when she signed on.

"Everybody at my table, they've been with me for so many years, when the phone wasn't ringing. [My team] stuck by me and believed in me. ...I've been around! I got to thinking about something my mom said to me," Menzel said.

"'You're not really going to make it 'til you build a thicker skin. The universe won't give it to you until you're ready.' [I'm always] told a Broadway singer can't cross over. ...'Who are you? Who are you?' [everyone wants to know]. And the answer is. ...I don't know! I know I'm a cool chick, hard worker, good mom, pretty talented singer. It has taken me this long to realize that if you're easily able to categorize yourself you're probably [shaping into] someone else's opinion of you."

She concluded with a thank you to the song and the film that has now made her a star, "I was given this amazing song ['Let It Go'] at such a crossroads in my life. Thank you for noticing me. ...I finally had my breakthrough!"

Menzel will return as Elsa in the short film, Frozen Fever, which comes out in 2015 attached to Cinderella.

Tags: Frozen 2 Movies Idina Menzel Disney