A woman and two teenage girls have been charged after several women were assaulted and robbed at a shopping centre in south Sydney.

The 18-year-old and two 16-year-olds are accused of assaulting and robbing five women aged between 16 and 46, at Menai shopping centre on Monday night.

An 18-year-old woman arrested by police at a house in Menai has been charged with offences including three counts of affray, aggravated stealing, and assault occasioning actual bodily harm in company.

She was refused bail to appear at Sutherland local court on Friday.

Two 16-year-old girls will face Bidura Children's Court on Friday after they were charged with similar offences.

They were also refused bail.