RIHANNA shows she's no glass act - as she swigs wine straight from the bottle.
The 25-year-old posted the snaps of her necking the beverage backstage on to her Twitter account with the caption: "Getting bent back here!"
The R&B star - who had a No15 hit in the UK with Cheers (Drink to That) - started the boozy antics after performing the latest leg of her Diamonds tour in Atlantic City.
In one photo the megastar is pictured cross-legged on the floor necking the nearly empty bottle with the title: "Po it thee phuck up!!!"
Another pic loaded on Twitter under the heading "Rihanna behind the scenes of the show in Atlantic City" showed the singer with her gig outfit gaping at the back.
But the star soon zipped up and performed her raunchy routine to the screaming crowd.
The Rude Boy singer grabbed her crotch - as usual - and flashed her buttocks as she performed to the screaming crowd.
And she proved she's still in great shape - despite smoking the odd ciggy - by performing squats as well.
She teamed the huge white Chanel sunglasses with a virginal white T-shirt dress with gaping sides, leggings and a huge medallion.
She completed the look with a backwards cap.
And delighted her followers by puckering up as she was driven away.
