Rita Ora danced on tables as she partied in New York City on Wednesday night (31.07.13).

The 22-year-old pop star and her friends got their groove on at the Gramercy Park Hotel's Rose Bar till the early hours of the morning.

Rita and her pals downed champagne and shots and danced all night before leaving at around 4am.

When they exited the venue, the 'Radioactive' singer and her friends were chased by a bar worker leaving everyone confused as to what was going on.

Initially it was thought there was a problem with their payment, but the bar girl was actually running after Rita to return a credit card someone had left behind to cover the sizeable drinks tab.

A source told the New York Post newspaper: ''They were dancing and drinking until 4am. When they left, a waitress chased them out of the bar and knocked on the car window.''

Rita's representative added: ''She would never leave without paying.''

The sexy star was in 'The Big Apple' this week shooting scenes for her upcoming DKNY adverts.