MKS have credited Facebook with sparking their reunion.
The trio - made up of original Sugababes members Keisha Buchanan, Siobhan Donaghy and Mutya Buena - recently got back together and they admit they had to hold some peace talks as relations between them were stormy, so Keisha got on touch with Siobhan on the social networking site.
She told Ponystep magazine: ''Me and Siobhan had to sit down and have that conversation before anything else. There were a lot of things misconstrued over the years and we weren't in a good place. But we reached an understanding and were able to move forward.
''I remember sitting on my couch watching Mutya on 'Lorraine', just after I'd left the Sugababes. Lorraine said 'You might as well call Siobhan and get the original band back together.' I could see Mutya thinking 'Perhaps.' That was the start.
''After that, I Facebooked Siobhan and we said we should meet up.''
Keisha was the last original member to leave the group in 2009, being replaced by Jade Ewen, but she says she can't talk about her split from her former bandmates Heidi Range and Amelle Berrabah.
She said: ''Legally, I've been told I can't go into detail. I can speak for England and I'd enjoy telling the world exactly what happened but I can't. I pretty much found out when everyone else did. We had a really good relationship.''
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