Peaches Geldof has unveiled her latest 1950s-style ads for Ultimo. She has once again stripped down to her skivvies for the label's younger line, Miss Ultimo. She also continues her affinity with fashion by becoming the latest muse for Biba. Although we are yet to discover what her role as muse will involve, the Mirror reports that the socialite is over the moon at being chosen.

She was recently filmed getting the 'Biba Look' by make-up artist Daniel Sandler to promote the forthcoming documentary, Beyond Biba: A Portrait of Barbara Hulanicki, due to hit cinemas this week.

"Biba is where the foundations of the liberated woman's choice of clothing were laid. It's a seminal label and one that is referenced time and time again with modern trends," Peaches said.

  • Miss Ultimo's latest range is priced from £8 and come in sizes 30B to 38D for bras and 8-18 for briefs.