Los Angeles, Mar 20 (IANS): Hollywood actress Carrie Underwood admits she becomes very emotional every time she flies. She often cries while watching in-flight movies.

"I seem to cry a lot on planes when I watch movies. I think it has something to do with the pressure and the funky air. I watched the latest 'Twilight' and I will admit that I got a little misty" contactmusic.com quoted the 30-year-old as saying.

"I don't feel embarrassing about it. I was on stage once in Yakima, Washington, and I said Yamaha instead of Yakima. That's the only time I ever messed up. But they laughed, they were with me. I got booed for saying I was a vegetarian in Nebraska. It's a big livestock area, I'm still not sure how it came up" she added.

The 2005 "American Idol" winner also revealed how she secretly wore braces on her teeth last year and was pleased nobody found out.

"I wore braces at the beginning of last year for three months and no one knew" she said.