Taken just five days before the Britney’s now infamous head-shaving incident in February, Brit leaves little to the imagination in an impossibly teeny thong.

Partying with palls at the Club One nightclub in New York city, the troubled 25-year-old mum-of-two dived backstage to chat with the night spot’s resident dancers and ended up stripping down to her smalls in the process.

Click on the thumbnails for the unedited pics.