Keisha Buchanan has teased fans of the original Sugababes line-up by suggesting that she is back in the recording studio with former bandmates Siobhan Donaghy and Mutya Buena.
Buchanan, who left Sugababes in 2009, sparked speculation when she tweeted: "Hanging out in the studio with @professorgreen and two lovely ladies with bags of talent :-p lol".
The original Sugababes line-up has not recorded together since their 2000 debut, 'One Touch'.
There have been persistent rumours that the singers would reform since Mutya Buena made a legal bid for the rights to the Sugababes name last year.
UPDATE: THEY ARE BACK TOGETHER AND EVERYTHING IS RIGHT WITH THE WORLD.