(Cover) - EN Star Style - Hayley Atwell says great underwear is the key to a perfect outfit.

The British actress, who is one of the stars of Captain America: The First Avenger, says wearing undergarments that make you feel sexy is a sure fire way to radiating confidence.

The 29-year-old beauty thinks donning gorgeous lingerie makes her feel fabulous, regardless of what attire she chooses from her wardrobe.

"The best style advice I've ever heard is every outfit should start with a great set of underwear. It doesn't matter what you're wearing, if you've got fabulous lingerie on, you'll feel great and radiate confidence," she said in an interview with InStyle.

Hayley relies on her friends to advise her on her fashion choices. The stunning star admits they are very honest when it comes to what suits her and pointing out her unsuccessful red carpet looks.

"My friends are my stylists. I can always rely on them to be totally honest. I was worrying about what to wear for promoting Captain America, so a mate googled me and we went through all the outfits she liked and the ones she didn't," added Hayley. (C) Cover Media