Kate Moss and Sienna Miller look set to team up and sing a duet this weekend. I hear the pair will perform a song together in Vienna where they are booked to perform at a Agent Provocateur lingerie event. The supermodel and the actress will be supported musically by Mick Jones of The Clash. A mole in Vienna reveals: “Sienna and Kate have been practicing non stop to get ready for this gig and they have obviously been paid an absolute fortune to attend.” This will either be a disaster or pure brilliance. One thing’s for sure though, I never saw this one coming!