Rihanna spent a staggering £15,000 on alcohol in just three hours.

The 'Rude Boy' singer headed to London nightclub Mahiki after playing a sold-out show at The 02 Arena on Monday night (10.05.10) and treated her huge entourage to champagne, vodka and Jagermeister – a German herb liqueur.

One fellow reveller said: 'She turned up with a massive entourage of about 70 people. She ordered thousands of pounds worth of alcohol, including Krug champagne, huge bottles of Grey Goose vodka and trays of Jager-bombs.'

The 22-year-old pop star had her own private dancefloor and partied until the early hours, at one point dancing to one of her own songs.

A source told the Daily Star newspaper: 'She had a section of the dancefloor cornered off just for her and when the DJ played her song 'Rude Boy' she started gyrating with a bunch of men.'

The Barbados-born beauty stayed at the club with her entourage until around 4.30am before heading back to her hotel.

A source said: 'When she left she was clutching a half-drunk bottle of Mount Gay rum. She took it into her car, saying it was a souvenir as it's made in her home country, Barbados.'

Rihanna played her second sold-out show at The 02 Arena last night (11.05.10).

The spectacular concert began with a heartfelt 'Russian Roulette', which was accompanied by huge images of crashing cars, guns and armies behind her on video screens.

An early highlight was 'Disturbia', during which Rhianna danced between giant bird-men on stilts.

She strapped on a guitar for the explosive 'Rockstar 101', while an acoustic rendition of Oasis' 'Wonderwall' saw her provocatively straddling a pink tank.

The singer – who is on the European leg of her 'Last Girl on Earth' tour – later sent the mostly female audience delirious with a frenetic rendition of 'Rude Boy', before bringing the house down with her biggest hit 'Umbrella'.