She's about to do it again!

The wait is almost, almost over for the full video premiere of "Hold It Against Me," the smash debut single from Femme Fatale Britney Spears' upcoming new album.

In advance of Thursday evening's premiere -- the clip is more than 9 minutes long! -- the pop superstar shared a 30-second preview late Wednesday.

In the clip, Spears, 29, struts her stuff in a black leather mini-dress, writhes on the floor in rainbow-colored ball gown, smolders into a paparazzi camera, and much more.

Watch the preview now!