Megan Fox: I Don't Look "Classy" in Underwear

Megan Fox wishes she looked a little more sophisticated in her skivvies.

"There are some women you could put in underwear and photograph them, and it looks really classy and it doesn't necessarily provoke a pinup image," the actress, 23, tells the March issue of W magazine.

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"But with me, it does, immediately. As soon as I'm in underwear, I'm a Vargas girl," adds Fox, referring to the curvy women featured in ads from the 1940s.

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Fox says she has "no confidence, and because of that, I'm always second-guessing myself."

She also doesn't have a lot of famous friends (besides beau Brian Austin Green, whom she's been dating on and off since 2004).

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"I especially don't trust girls in this industry, because it's incredibly competitive, and I'm just not interested," she tells the magazine.