A flock of bridesmaids

You loiter around the edge of the dancefloor, watching for options. A particularly good option walks past you, in the form of three of the four bridesmaids -- all but the Maid of Honor. They are talking, walking arm-in-arm, and laughing. You surreptitiously follow them. Each is wearing one of the maroon bridesmaid dresses, which are ugly and not very well cut, but the attractiveness of these girls shines through their unattractive clothing. They all seem to be college friends of the bride.

They walk out of the reception hall, and towards a nearby pair of bathrooms. You checked these out on your way into the hall; they are large, comfy bathrooms, each containing a toilet, a sink, and a large plush couch. They are meant to be one at a time, but the bridesmaids seem to plan on going in together. You creep up so that you are right behind them, will them not to notice you, and follow them into the bathroom, locking the door behind you.