Welcome to our selection of Plus Size Costumes for women and men. Here we have plus size fancy dress for every shape, party theme and event! Hit the party dressed to impress, give your friends a laugh at a stag or hen-do, or get ready for a fun corporate event. Plus size outfits can be used for any occasion that calls for dressing up! Our sizes range from 18-28 for women and XXXL for men, so you can be assured we have the right size for every style. For an authentic superhero makeover, check out our heroic Supergirl Plus Size Costume, or how about a sleek Batgirl Outfit? Guys will look cool in a Ghostbusters Costume or as the mythical Greek warrior, Hercules, with this Traditional Gladiator Costume. Other plus size dress-up options include pirates, historical figures, movie characters, animals, uniforms and ideas for special occasions such as Christmas and Halloween. Find all of the XXXL fancy dress costumes you need here on Fancydress.com and pick out the perfect outfit for you!