Tipsy Girls Aloud star Sarah gets a little help from her friends

Girls Aloud's resident hellraiser lived up to her hard earned reputation for 'caning it' by partying into the wee hours at celebrity haunt Paper.

And judging from her unsteady appearance, Sarah had indulged in a fair old selection of alcoholic drinks.

The platinum blonde star left the club, a favourite of celebrities P Diddy and Sienna Miller, in high spirits supported by a female friend.

Flashing a v-sign, which clearly wasn't for Victory, Sarah unsuccessfully tried to dance with a photographer and when she failed showed off some moves of her own.

In another comical display, she even tested her own sobriety by attempting to walk in a straight line.

She failed miserably.

A source inside the club said: "Sarah arrived quite late with a couple of pals and seemed well oiled already.

"She was having a great time dancing around and knocking back drinks."

In contrast to last night's rowdy behaviour, Sarah seemed to be better form at last weekend's British Grand Prix.

Along with bandmates Kimberley Walsh and Nicola Roberts, she was one of several celebrities, including the Beckhams, who turned up to support the event and see Formula 1 ace, Lewis Hamilton.

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Steady on: Girls Aloud Sarah Harding lives up to her reputation for 'caning it' as she left a London nightclub looking somewhat worse for wear

A little help from a friend: In the absence of her bandmates, a friend steps in to help a tipsy Sarah make a more dignified exit

Unlike her shenanigans at Paper, Harding seemed in full control on that day. But according to The Sun there was a more fitting reason for the absence of any bad behaviour.

While waiting to board the 20-minute shuttle to Silverstone at London's Battersea Heliport with Kimberley and Nicola, Harding was overheard moaning to new man, market stallholder and DJ Tom Crane, that she was still feeling rough from the night before.

Judging by these pictures, it's a sure bet she's feeling much the same way today.

Walk the line: Sarah conducts her own sobriety test - needless to say, she failed

Wild thing: A rowdy Sarah Harding has left the building