It's Britney, b#@ch!

Ms. Spears definitely commanded attention while arriving at the viewing party for The X Factor at Mixology in West Hollywood.

The 31-year-old songstress showed off her curves in a skintight Christopher Kane mini paired with Prada shoes.

The party was held to celebrate the final four X Factor contestants.

Brit's look makes us want to scream and shout ... in a good way!