Victoria Beckham ran nine miles a day for six months to slim down for a sexy lingerie shoot.
The 34-year-old former Spice Girl - who is frequently criticised for being too thin - reportedly embarked on a strict exercise regime in preparation for an intimate Giorgio Armani underwear shoot.
A source said: "Like any woman, she's conscious of her body, so she worked really hard to get into optimum shape."
It seems all her hard work has paid off - Victoria appears lithe, toned and athletic in the tasteful black and white shots, wearing nothing but a black polka dot bra and thong and black high heels.
Armani, who is good friends with the couple, praised Victoria calling her "a stylish and intriguing woman".
The singer - who has three children with soccer player husband David - reportedly hates stripping off for the camera, but couldn't refuse the £12 million deal.
A source said: "Posh vowed never to do an underwear shoot again but the offer by Giorgio was too good to turn down."
The film-noir style images were shot by renowned photographers Mert Alas and Marcus Piggott, who also took the photos of David for his Armani campaign last year.
The Los Angeles Galaxy player caused controversy when his advertisement was unveiled, with some critics claiming the images had been airbrushed to make him appear well-endowed.