Britney Spears Celebrates 35th Birthday On Stage at Jingle Ball!

Britney Spears celebrated her 35th birthday on Friday (December 2) and she rang in a new year of life by performing at 102.7 KIIS FM’s Jingle Ball 2016 at the Staples Center in Los Angeles.

The entertainer was surprised on stage with a birthday cake from the event’s host Ryan Seacrest.

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During her set, Britney performed her current single “Slumber Party” live for the first time with collaborator Tinashe!

Click inside to watch the video of the birthday surprise…