Lily Allen has only been back from holiday a day and she's still stripping off.

The singer, 23, happily flashed her cleavage as she disrobed to her bikini bottoms during a week-long vacation on the French Riviera.

Despite being a long way from a beach in her native London today, an unashamed Lily changed from her denim mini-skirt into her combat trousers on a busy street.

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Lily spent a week in Cannes at the town's upmarket Hotel Du Cap with male friends and father Keith Allen, who was promoting his documentary Dark Forces, about the death of Diana, Princess of Wales.

The Smile star was regularly photographed swimming and sunbathing topless at the Hotel and during her visit on Formula 1 boss Flavio Briatore's yacht.

Lily was a force to be reckoned with on the Cannes party scene and was spotted looking rather worse for wear after attending the post-premiere party for How To Lose Friends And Influence People.

Revealing: Lily's reveals her tanned stomach as she unbuttons her denim skirt

When asked if she was bothered by the paparazzi shots of her naked chest, Lily said: "No, it's my body.

"I heard I was a Page Three girl today."

After her tabloid-centric holiday in Cannes, Lily returned to sunny London today where she caught up with a male pal over a pizza near her north London home.

Chowing down: After a week of French food, Lily sinks her teeth into some Italian cuisine with a male friend

After her Italian lunch, Lily withdrew a wad of cash and splashed out on three pairs of Nike trainers.

The singer flashed her holiday tan in a minuscule denim skirt, but as the clouds drew in, she then decided to change into something a little warmer.

While some people would attempt a wardrobe change in the privacy of a toilet cubicle or their car, Lily happily peeled off behind a car door, which failed to cover her modesty.

Cuddle up: Lily struggles to reach up to hug her taller male companion