Idina Menzel Explains Why She Changed Her Last Name

Broadway and "Frozen" star Idina Menzel's sister Cara's last name has an extra letter in it—Mentzel—and Idina explains why she changed hers.

"It's my fault," Idina says about her last name being different than her sister Cara's on the cover of their new book, Loud Mouse. "When I was younger, for some reason when I was looking for a stage name, I thought Menzel would be pronounced easier than the 't.' Then when we had this book, I said, 'Cara, just make your name Cara Menzel. And she was like..."

"No," Cara chimes in. LOL—sisters!