Jennifer Lopez turns 40

Jennifer Lopez plans star-studded 40th birthday bash

Marie Claire celebrity pictures: Jennifer Lopez on the catwalk at the Dolce and Gabbana S/S 2009 show in Milan
Marie Claire celebrity pictures: Jennifer Lopez on the catwalk at the Dolce and Gabbana S/S 2009 show in Milan

Jennifer Lopez plans star-studded 40th birthday bash

Happy birthday Jennifer Lopez!

The eternally youthful mum-of-two turns the big 4-0 today, and is planning a star-studded bash to mark the occasion.

JENNIFER LOPEZ 40TH BIRTHDAY GALLERY

With A-list guest-listers expected to include Tom Cruise, Katie Holmes, Victoria and David Beckham, the spectacular party will take place on Saturday night in Lopez's native New York

An insider revealed to WENN, 'Everything is being kept top secret. Even performers won't be told if they have been hired until the last minute, to prevent details of the party from being leaked.'

Meanwhile, on the Marie Claire desk we've planned our own tribute to Ms Lopez, with a round-up of the superstar's top 40 defining fashion moments. From the stylish, to some serious crimes against fashion, check out how J-Lo went from Jenny from the Block to Hollywood's hottest diva here.

J-LO AT 40: LOOK BACK AT HER STYLE HIGHS AND LOWS HERE

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