A woman who falsely accused two Victorian policemen of sexually assaulting her after they arrested her for being drunk outside a South Yarra nightclub has been convicted and fined $2000.

Karly Enid Jean Mitchel, 25, had formally complained after her release from custody that she had been "groped" on her breasts by the police and touched on her inner thighs and outside her crotch.

Melbourne Magistrates Court heard today Mitchel had been refused entry about 2am on August 6 last year to the Circus Nightclub and then spent 45 minutes abusing crowd controllers.

Prosecutor Peter Atkinson said when two members arrived in a divisional van to assist the bouncers about 50 minutes later they found Mitchel at the rear of the Prahran Market, approached her to establish her identity and she became abusive.

Mr Atkinson said that due to her level of intoxication, lack of co-operation and concern for her safety, she was arrested for being drunk.