The model, who was one of the audiences at the launch bash for fashion label House of Blueeyes, at London's Bush Hall, all of a sudden decided to walk the ramp.
"Kate was jumping about asking to model." The Sun quoted a source, as saying. "You'd have thought it was her first time, but the crowd knew this was something special," the source added.
Moss grabbed a top hat and a cane and hit the stage watched by her beau Jamie Hince and the audience. Gossip frontwoman Beth Ditto hosting the show also paraded with Moss in a clown suit.