Britney Spears on the "I Wanna Go" Video Shoot Set

Britney Spears- "The Big Fat Bass" Live at Jimmy Kimmel

She looks amazing... but I'm pretty sure my dog can dance better than her these days.

Nicki Minaj & Britney Spears Live at the Billboard Awards

Nicki Minaj performed her single "Super Bass" live at the Billboard Music Awards and then joined Britney Spears to perform the remix of Spears' hit "'Till the World Ends."

Rihanna & Britney Spears Live at Billboard Awards

Check out Rihanna and Britney Spears perform "S&M" live tonight at the Billboard Awards. HOT! I like it, like it.

Britney Spears & Rihanna Perfoming Together?

Britney is performing at the Billboard Music Awards in Las Vegas on Sunday, according to Us Weekly. TWICE! Britney will do one performance — potentially the opening number — with Rihanna, 23. The duo will perform Rihanna’s hit song “S&M.” Spears will also be performing for the first time ever with Nicki Minaj, 26. Spears and Minaj will partner up for a remix of Spears’ hit “Till The World