Slim Renée Zellweger turns heads at Vogue party... but Reese Witherspoon looks even skinnier

She's rumoured to be filming a third Bridget Jones film later this year.

But petite Renée Zellweger showed no sign of piling on the pounds as she posed for photographs at a Vogue party in Hollywood last night.

The 40-year-old actress dazzled in a burgundy corset and black pencil skirt - but fellow star Reese Witherspoon appeared even skinnier in a crushed purple silk mini-dress.

Renee Zellweger
Reese Witherspoon

Slim and slimmer: Renée Zellweger and Reese Witherspoon at a Vogue party last night held to mark the opening of fashion designer Vera Wang's new LA store

Reese Witherspoon

Stylish: The Hollywood A-listers posed together on the red carpet

Both put on a friendly display and cosied up on the red carpet to have their photos taken at the dinner party, held in honour of fashion designer Vera Wang's new store.

For her first two films as Helen Fielding's diary-writing assistant, Renée piled two stone on to her tiny frame and then rapidly shed the pounds afterwards.

Her agent recently denied rumours the actress, who is dating fellow star Bradley Cooper, has refused to put on weight for the third movie, saying 'Renée more than anyone would be true to the character'.

Meanwhile Reese looks to have got even skinnier in recent months, following her split from Brokeback Mountain star Jake Gyllenhaal two months ago.

Kara DioGuardi
Mila Kunis

Time to party: American Idol judge Kara DioGuardi and Forgetting Sarah Marshall's Mila Kunis

Vera Wang, left, and figure skater Evan Lysacek

Looking slick: Fashion designer Vera Wang, left, and figure skater Evan Lysacek arrived together

Although her broken heart could well be on the mend as the Walk The Line actress has been spotted on several dates with dashing Hollywood agent Jim Toth.

While Renée and Reese, 33, may have stole the limelight, the pair were joined by a host of other stars at the swanky do.

Forgetting Sarah Marshall star Mila Kunis wowed in a LBD and vertiginous bondage heels.

American Idol judge Kara DioGuardi slipped into a multicoloured shift dress with sheer pannelling while stylist to the stars Rachel Zoe arrived in a puffy monochrome off-the-shoulder ensemble.

Rachel Zoe
Maggie Grace
Nicky Hilton

Making an impression: Stylist to the stars Rachel Zoe, and actress Maggie Grace and Paris Hilton's younger sister Nicky

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