Carrie Underwood: "Reese Witherspoon Is My Fashion Icon"

Carrie Underwood: "Reese Witherspoon Is My Fashion Icon"

Carrie Underwood has earned an estimated $20 million, has five Grammy Awards to her name, and in 2010, made her feature film debut in Soul Surfer.

Yet despite all of her amazing accomplishments, the 28-year-old singer admits she's still learning how to take care of her famous face.

For her second ad campaign with Olay (she's the brand's Celebrity Ambassador), Underwood is helping young women solve common skincare mistakes -- including some that she's guilty of making herself.

"I used to not worry about any kind of sunscreen, and I was always outside in the sun," she tells Us Weekly in an exclusive interview on the set of the Olay shoot.

One thing that the country superstar doesn't have to improve is her red carpet look. However, that doesn't stop her from admiring another celeb's style: "Reese Witherspoon is one of my favorites because she just seems so normal. She's my fashion icon."

Watch Carrie Underwood dish more on fashion, skincare and her fitness regimen (including how she gets her legs to look so sexy!) in the video above.