Britney Spears and ex-beau Adnan Ghalib were spotted in the Mirage Casino in Las Vegas this Sunday, prompting speculation that the pair are back together.

As Britney relaxed by the pool, Adnan wondered the halls of the casino, no doubt intent on finding the next biggest story.

Whether the two were aware of one another’s presence remains unknown but that hasn't stopped gossip that Britney and her photographer beau have reunited.

The singer lounged lazily round the pool, on her phone texting all day and occasionally dipped into the pool to cool herself off.

She finished her day with a trip to Siegfried and Roy's Secret Garden and the Cirque du Soleil's Love show, with no Adnan in sight.

Britney and Adnan reportedly split earlier this year.