Megan Fox was just named sexiest woman in the world by FHM magazine for the second year in a row -- and Kim Kardashian understands why.

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"Megan Fox is so hot," she tells Entertainment Tonight. "She is, like, my girl crush -- and I don't have girl crushes!"

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Kardashian says she went to the L.A. premiere of Transformers: Revenge of the Fallen this week to hopefully catch a glimpse of the actress.

"That's really the only reason I'm here," she said, adding that her beau Reggie Bush also has a thing for Fox. Fox told June's Esquire being sexy comes naturally.

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"I'm just really confident sexually, and I think that sort of oozes out of my pores," she said. "It's just there. It's something I don't have to turn on."

Still, she said, "If you know how to take control of [being a sex symbol], then it can be powerful. But I have no idea how to handle it yet, how to deal with it."