Christina Perri performed in Brighton in a maroon three-quarter sleeve dress with black lace trim. It’s the Burgundy Lace Trim Dress by Vaudeville & Burlesque which was sold at Urban Outfitters in the UK and Europe for £85.00. Unfortunately this dress is sold out online, however it is a recent item and may still be available in stores. You can shop the rest of the Vaudeville & Burlesque collection at Urban Outfitters.