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Kim Kardashian became a household name for stripping down, so it doesn't surprise us that she's at it again!

The curvaceous reality star posted a very sexy photo to her Instagram account on Tuesday morning with the caption, "Can't sleep tonight." Wearing nothing but pink bloomers and hiding her chest behind a white bed sheet, Miss K seductively mugged for the camera and seemed to have no shame baring her bod... could she be trying to show Reggie Bush what he's missing?!

This is the second picture released this week of the Keeping Up With The Kardashians star in lingerie. The soon-to-be divorced mogul stripped down with her sisters Kourtney and Khloe in a sexy ad campaign for the Kardashian Kollection Sears line.

Maybe this is why Jon Hamm isn't such a fan of Kimmy K! The Mad Men actor slammed her and former bestie Paris Hilton in a recent rant, and after the Quicktrim spokesmodel fired back, Hamm backtracked on his comments, saying, "I don't know Ms. Kardashian, I know her public persona. What I said was meant to be more on pervasiveness of something in our culture, not personal, but she took offense to it and that is her right."

Meow! We wonder if P. Hilton is going to give the actor a piece of her mind as well?!