Actress Kristen Bell was blown away by Broadway icon Idina Menzel's stunning vocal range after hitting the studio together to record songs for an upcoming animated movie.

The Forgetting Sarah Marshall star voices the role of a young girl searching for the Snow Queen, portrayed by Menzel, in the forthcoming musical film Frozen, and Bell admits singing with the stage superstar was awe-inspiring.

She tells Eonline.com, "It's just unbelievable. It's bone-chilling is what it is - bone-chilling!"

And Bell reveals lending her voice to Frozen helped her achieve a lifelong goal: "It's quite literally my dream come true because I've been obsessed with Disney princesses since I was a little girl, as most little girls are. I studied music in college, so this is a very, very real dream for me coming true."