Party City is the destination for party supplies for any birthday party, Halloween costume party, baby shower or any holiday event! For the biggest selection of supplies for birthday parties for boys and girls, supplies for holiday and theme parties, and costumes for Halloween, shop online at Party City. With over 800 stores nationwide, Party City is America’s largest party retailer. Find the best deals and coupons online for all of your party, costume, decoration, and party favor needs at Party City.