Naughty photo of Carla Bruni being auctioned tomorrow

French President Nicolas Sarkozy might want to bid tomorrow on a naughty photo of his wife, Carla Bruni, on the block at the Phillips de Pury auction house in London. The sex-themed sale -- barred to anyone below the age of 18 -- of 221 works includes the 1992 photo Helmut Newton took of the pantsless supermodel, bending over and showing her shapely derriere, valued at up to $7,500. There are also pieces by David Hockney, Matisse, Picasso, Andy Warhol and gay iconographer Tom of Finland.