Britney Spears has had her ups and downs but her fans swear the pop star is back. Britney kicked off her Femme Fatale tour in Los Angeles last night to great acclaim.

Britney's costumes have been controversial over the years. From her sparkly nude bodysuit on the 2000 MTV Video Music Awards, her red pleather body suit in the 'Oops...I Did It Again' video to her barely there jungle costume and albino snake neck accessory BritBrit has always kept us guessing...especially with the tube sock on her arm at the 2001 Superbowl Half-Time Show. A tube sock, Britney? Why?

Here's a look back at some of her most interesting outfits.