What's been eating Sugababes for the last 15 years? Initially it was Keisha Buchanan, who first-out-the-door Siobhan Donaghy called a "bully". Donaghy's passage through the band wasn't helped by Buchanan and Mutya Buena's secret language, but Buchanan found the boot on the other foot when it kicked her out in 2009. Now the original trio, MKS, love each other very much. What's this we're hearing?