Rihanna posts pic with Kate Moss and Stella McCartney

Singer tweets fans a stunning snap of the three leading ladies

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(Image credit: Rihanna Twitter)

Singer tweets fans a stunning snap of the three leading ladies

Superstar Rihanna has been celebrating her birthday in serious style since jetting into London on Saturday.

The singer kick-started her celebrations when she partied all night with the likes of Kate Moss and Alexa Chung at Stella McCartney's ultra-glam after show dinner on Sunday night.

Making possibly the coolest trio EVER, Rihanna tweeted a pic of herself with Kate and Stella, with the simple caption: 'Kate Moss, Stella #BadB***hStatus,' with the flirty trio working their best model poses for the camera.

After pulling an all-nighter, Rihanna had to attend rehearsals for last night's Brit Awards the following morning, where she apparently wasn't quite on top form.

BRIT AWARDS 2012: PERFORMANCES

A source told the Mail Online: 'This morning, Rihanna turned up to rehearsals really, really late and kept everyone waiting. She didn't do any singing or dancing whatsoever. She literally stood on the stage like a zombie.'

'She made all of her dancers, about 50 of them, dance around her and she stood looking really p***ed off like she'd been dug up.'

Showing there's no rest for the wicked, the feisty singer seemingly made a full recovery and was back on the town that night where she celebrated her birthday with Topshop heiress Chloe Green.

Rihanna, looking drop-dead gorgeous in a classic black ensemble with chic white coat, and Chloe were joined by Kelly Brook at Japanese restaurant Nozomi in Knightsbridge.

Obviously having a ball, the 24-year-old tweeted: 'This has to be the funniest night of my life!!! I have not stopped laughing!!!', before later posting a pic of herself tangled up in some large birthday balloons.

Oh, and to top it all off there was last night's Brit Awards to attend. Showing no signs of her heavy few days, a fresh-faced Rihanna looked stunning in a haute couture Givenchy gown before treating fans to an energetic performance of her hit single We Found Love.

How does she do it?!

RIHANNA STYLE HIGHS AND LOWS

BRIT AWARDS AFTER PARTIES

PICS: BRIT AWARDS 2012