Help! Prom shoes and clutch bag etc! UK answers pleasee :)?

My prom is in a week and i still havnt got heels, they cant really be platform because im tall 5'6 and a half. I also need a clutch bag, and does anyone know a good shop that does cheap acrylic nails in brighton & hove? i dont want to spend alot on this as ive already spent quite abit on other stuff, thanks :) this is my dress http://www.lipsy.co.uk/store/pixie-party/pixie-embellished-bandeau-frill-dress/product-is-DR03461_075