While the celeb gossip world buzzes over whether Casey Aldridge got Jamie Lynn Spears pregnant again, her older sister is gearing up for a big comeback.

Below is new promotional photo of Britney Spears as a sassy secretary from her much-anticipated “Womanizer” music video, which premieres Friday night.

Britney Spears fights back against men in her new "girl anthem."

As a song, "Womanizer" is... well, like her other songs.

But the recovering pop superstar sure looks sexy with her various new looks - check out more Britney Spears pictures from the video shoot to see what we mean!