Bono is set to collaborate with ... the Spice Girls? It's actually not as frightening as it sounds. The U2 frontman has written a song for the British quintet's forthcoming greatest hits album, and Posh, Baby, Ginger, Scary and Sporty will perform it on their fast-selling world tour. "Bono's involvement has lifted the whole camp and he's delighted to have been asked and add his experience," a source told the UK's Mirror.

"There's been a bit of unease as to how the album will perform and if there's still a solid Spice Girls' fanbase out there," the source told the paper, yet the Girls' London date sold out in a mere 38 seconds. No word on whether the globe-trotting Irishman will hop onstage with the ladies for a sing-along.