Formals XO has two locations, one in Oxford Valley Mall Langhome PA and one in King of Prussia Mall, King of Prussia, PA. At Formals XO we have the designer dresses for every occasion. We stock formal gowns sizes from 000 to 23 with a huge selection of styles and designers. If you are looking for a one of a kind Pageant gown, a sassy short cocktail dress or a Prom dress that will help you turn heads we have your style at Formals XO. When it is time to celebrate you for your debutante ball, sweet 16 or Quinceanera celebration come and see your friends at Formals XO, Make an appointment with one of our beauty consultants today and shop it like it's HOT! We have some of the most attractive dress trends that come from top designers like Sherri Hill, Jovani, and Ellie Wilde, and many more. Looking for that one-of-a-kind color, cut or design? We also have unique, exclusive dresses at Formals XO! You have nothing to worry about - the perfect fit is possible with in-house alterations.