Rachel Stevens looked stunning as she showed off a curvier figure that some were comparing to Jennifer Lopez.

All eyes were on the pop star as she flaunted her new J-Lo-esque figure as she stepped out in central London last night.

She looked gorgeous as she arrived at Annabel's nightclub for a pre-Baftas party in a short black and white striped dress, which clung to her sexy new figure.

Curvy: Rachel Stevens shows off a fuller figure as she attends a pre-Baftas party at the private club Annabel's in London last night

The 31-year-old tiny pop star definitely looked like she'd gained a few pounds in all the right places as she posed for cameras outside the private Mayfair club.

With her husband Alex Bourne in tow, she completed her gorgeous look with a black clutch bag and black stiletto heels.

Party animal: A formal Colin Firth attends the Asprey pre-Bafta party (L) before removing his tie and heading off to Annabel's

The couple were part of a long list of celebrity guests at the annual bash, which is hosted by media company Finch & Partners.

Several of this year's Bafta nominations were in attendance, many of whom had party-hopped all evening, with two different bashes taking place ahead of tonight's prestigious event.

Leading ladies: Vera Farmiga (L) and Gabourey Sidibe arrive at the pre-Bafta party

Colin Firth, who has been nominated for Best Actor for his role in The Single Man, arrived tieless at the event, having hot-footed it from the Asprey pre-Bafta party at the Asprey Polo Lounge on Bond Street.

His joined his challenger to the gong, Andy Serkis, who is nominated for his portrayal of late singer Ian Dury in the film Sex & Drugs & Rock & Roll.

Cosy couples: Dustin Hoffman and Andy Serkis arrive at Annabel's with their wives

Actress Vera Farmiga, who in the running for Best Supporting Actress for Up In The Air, signed autographs as she made her way inside joining Best Actress nominee Gabourey Sidibe, who is up for the award for her role in Precious.

This, like Colin Firth, was her second party of the evening having also been at the Asprey event a mile or so up the road.

Here come the girls: Lily Allen and Janet Jackson glam up for the occasion

And although the Baftas is usually an event where the British film industry is given a chance to shine, many Hollywood blockbusters have been given nominations.

So it was hardly surprising to see some big names from the States also attending the Bafta warm-up parties, including Dustin Hoffman, who arrived at Annabel's with his wife Lisa.

Also attending were Sir Bob Geldof and his actress girlfriend Jeanne Marine, singers Janet Jackson and Lily Allen and actresses Isla Fisher and Thandie Newton.

Ready to party: Actresses Isla Fisher and Thandie Newton get in the party mood