She's been pretty vocal after her break-up from boyfriend David Lucado last month, and now Britney Spears has spoken out abouttheir relationship while on stage in Las Vegas.

The singer opened up about being single in between songs at her Piece of Me show at Planet Hollywood on Sunday (21 August).

"The best thing about your boyfriend cheating on you, is that you get to go on another first date!", she told fans.

Spears apparently found out about Lucado's infidelity after a videoemerged of him cheating on the star.

The Perfume singer then reportedly asked if there were any 'hot guys' in the audience, and was later joined on stage by Perez Hilton for her performance of Freakshow.

The celebrity blogger tweeted about his appearance after the show, writing: "Still pinching myself!

"I was Britney's slave - and I LOVED it!!!", he tweeted along with a photo of the pair on stage.

Still pinching myself! I was Britney's slave - and I LOVED it!!! @britneyspears #PieceOfMe @PHvegas #BritneySpears pic.twitter.com/lrIbN3Zd0K

— Perez Hilton (@PerezHilton) September 1, 2014