Can you help me?

Can you help me find a story? It was about a friend doing a favour for another friend, by dressing as a woman and being his date to a party. At this party the Guy dressing as a girl overhears people saying they think he is really the other mans sister, so on the dancefloor there is a bit of ass fondling and kissing to convince the onlookers. It goes further, with the guy dressing as a bridesmaid, as a favour for the other man's friend