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Ke$ha is all about wood these days...because she's promoting her song "Timber!"

And somehow, the 26-year-old singer knows how to make the sexy lumberjack look work. She demonstrated this unique ability in two sexy Instagram snaps posted on Sunday, Oct. 13—one showing some serious under boob, the other showing some not-playing-around bare butt cheek.

In the first shot, Ke$ha positions herself up against a wooden wall and shoots a sultry look back at the camera. She wears only a crop top, what appears to be a black thong and a red flannel shirt tried strategically around her waist. "it's going down," she captioned the butt-baring shot, "I'm yelling #timber."

Ke$ha followed up with a sexy pic of her taken from the front. From this angle, the bottom of her breast can be seen peeking out from beneath her semi-sheer white T-shirt.

It seems showing a little skin is creating some buzz! Hours after posting her sexy snaps, Ke$ha tweeted excitedly, "just heard TIMBER for the first time on the radio in Alaska," adding, "how appropriate."

Yes, indeed.