Lily Allen Performs in London Wearing a Black Lace Teddy Lingerie

We all appreciate sexy lingerie, but we don't all have the guts to show our sexy lingerie to the world. Except for Lily Allen. The singer started out performing a show in London wearing a buttoned-up black blazer with lace sleeves. Into the show she unbuttoned her blazer and what did fans see? A black, sheer, lace teddy . . . and her nipples! Lily is known for being quirky, but I doubt they saw this one coming. What do you think — is it tacky or all part of the show?