Last updated at 12:34 27 July 2006

In Hollywood's world of air-brushed perfection, Scarlett Johansson's real-life curves have won her a legion of fans.

Now there is another reason to warm to her. Like countless women, it seems the 21-year-old actress has a touch of cellulite.

But she isn't the sort of girl to let a little dimple or two stop her wearing an elegant short dress.

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Unveiled as the global new face of sportswear firm Reebok, Miss Johansson displayed the dreaded dimpled skin that, it appears, almost no woman is immune from.

Dressed in a skimpy outfit which hid nothing, she exposed her less than perfect thighs at the launch, which is ironically supposed to be based on the actress's "sporty" look.

In a multi-million pound deal, she will design her own retro-inspired clothing and footwear range which will be known as Scarlett 'hearts' Rbk.

It is likely that chiefs at the sportswear giant picked the actress for her toned body, which she put on show while playing a tennis player in her recent movie Match Point.

Miss Johansson, who models herself on late curvy icon Marilyn Monroe, does her best to remove herself from the painfully skinny look which many of her peers swear by to get acting work.

Instead the Oscar-winning star says she is determined to keep hold of her curves despite pressure to lose weight.

Talking openly about her twig-like colleagues, she said: "Everyone in Hollywood is so skinny and you're constantly feeling like you're not skinny enough."

The actress even showed off her curves alongside slender British star Keira Knightley when both went naked for the cover of Vanity Fair's annual Hollywood edition.

Since catapulting to fame in 1998 with her performance in The Horse Whisperer, Miss Johansson has gone on to become one of Hollywood's most successful young actresses.

In 2004 she won a BAFTA for her lead role in Lost In Translation.

However, while she is a star on the big screen, she has also scooped other fruitful advertising deals, including cosmetic brand L'Oreal, for which she was paid £3 million.