The singer/judge/southern belle/pop sensation looked like a vixen-y vision wearing a black Bottega Veneta gown that featured a gothic lingerie-style top that really showed off some seksi cleavage!
She played up the dramatic style with YSL shoes, smokey eyes, and her hair pulled up, but kept the accessories simple with Neil Lane jewels and Gabriela Artigas rings.
All the musical acts were great this year, but the one thing we're going to miss about this season's X Factor is seeing Brit Brit's fashion evolution since the first day of auditions to the season finale.
Here's hoping we get more of that sweet Louisiana pie in the third season!
[Image via Scott Kirkland/AP Images.]