Britney Spears & Tinashe's Jingle Ball performance: 'Slumber Party'

On her 35th birthday, Britney Spears was joined by Tinashe for 'Slumber Party' during a hits-filled set at iHeartRadio's Jingle Ball in LA.
You just know Tinashe had to simplify the moves and tone it down, just so that Brit Brit could keep up.

That said, it was still a cute performance and maybe this hook-up will stop Tinashe bitching about her label so much. After all, it seems they tried to help her out a little on the mainstream tip. Unfortunately, the cut only debuted at #86 on the Billboard Hot 100 and #73 on the official UK singles chart. Check out the performance below.

A video posted by Britney Spears (@britneyspears) on