Police say the bag was taken on the night of Saturday 19 September.
“A black Michael Kors handbag was taken from within the Prince Of Wales Beer Garden,” said police. “The bag contained identification of the owner as well as various other personal items.”
Anyone who saw the theft or who knows the whereabouts of the bag is asked to contact Guernsey Police on 725111 quoting reference number OC2000006608.
Alternatively, people can contact Crimestoppers anonymously on 0800 555 111.