It has been reported that Katy Perry is set to marry her boyfriend John Mayer.
A source revealed: "Everyone knows it's just a question of when John will propose."
On Sunday John took Katy as his date to his brother Carl's nuptials at New York's Mamaroneck Beach and Yacht Club.
It seems that Katy is already being treated like a member of the family, as she was seen dancing with John's 86-year-old father Richard at the wedding.
Due to their busy schedules the pair won't be seeing much of each other in the coming months. The Roar singer is gearing up for the release of her latest album Prism and about to embark on a grueling promotional tour. While John continues his European tour, which will see him perform at the London’s O2 arena on Sunday night.