The incident occurred at around 1 am on Monday at the junction of Hilary Street and Hilgrove Street.
A man was arrested and is currently being held in police custody.
Police are now appealing to anyone who may have heard or seen anything to come forward and contact them on 612200 or Crimestoppers anonymously on 0800 555 111.
The victim is being supported by Specially Trained Sexual Offences Liaison Officers.
