Powder Her Face, Op. 14 (1995), is a chamber opera in two acts by the British composer Thomas Adès, with an English libretto by Philip Hensher. The opera is 100 minutes long. It was commissioned by the Almeida Opera, a part of London's Almeida Theatre, for performances at the Cheltenham Music Festival. The subject of the opera is the "Dirty Duchess", Margaret Campbell, Duchess of Argyll, whose sexual exploits were the stuff of scandal and gossip in Britain in 1963 during her divorce proceedings. The opera is explicit in its language and detail.