A 31-year-old was slapped in the face by a man at a pub in Cheltenham.
The man, believed to be between 20 and 30 years old, went up to the Innsworth woman, shouted 'high-five' before slapping her.
It took place just before midnight on Friday, February 8 in The Spectre on Cheltenham High Street.
The man was described white, around 5ft 10" tall, of medium build and wearing a blue denim style jacket.
Anyone with information can contact Gloucestershire Police on 101 and quoting crime number 3106.