Lily Allen made a surprise appearance performing at the Wurzel Gummage themed Chanel show at Paris Fashion Week last night.

The singer, who has a modelling contract with Chanel, burst through a trapdoor on the catwalk of Karl Lagerfeld's 'romp in the hay' themed show.

She proceeded to sing her hit song 'Not Fair' surrounded by models strutting their stuff on the catwalk.

A high profile affair, Prince, Rihanna and Sean Lennon were all in the audience. See Allen performing below:

(by Scott Colothan )