Justin Timberlake and Madonna were spotted emerging from a London studio looking a little worn out after their first day recording together.

The pop superstars are collaborating on the Queen of Pop's new album which is believed to have a hiphop feel.

JT, who is in the UK preparing for for his current world tour, revealed to The Sun: "I've been working on new music but it's not for myself. I'm working on some stuff for Madonna."

Madge, meanwhile, caused havoc outside the studio last night as she demanded her car be brought to the back door and parked on the pavement so nobody would see her escape.

Diva demands? Hooking up with the latest acts in an attempt to add cred to your career? It's nice to see that some things never change.