Forever 21 is a chain of clothing retailers throughout the United States, Philippines, Canada, Singapore, Indonesia, Malaysia, United Arab Emirates, Jordan, Oman, Kuwait, Saudi Arabia, Bahrain, Thailand, China, South Korea, Japan, and Puerto Rico [June 2009] offering fashion and accessories for young women and men (teenagers).

Most of the retailer's apparel is private label and made in the United States in Southern California, with the exception of their "Fabulous Finds", which are very cheap items imported from Vietnam. Forever 21 typically serves the same audience and competes with Urban Outfitters, Wet Seal, Guess, Deb Shops, and charlotte Russe. Forever 21: main and original store carrying women's clothing, accessories, swimwear, lingerie, and shoes.
XXI Forever: flagship mega store carrying merchandise from all store formats.
Heritage1981: vintage clothing, accessories, and shoes for men and women.
Gadzooks21: women merchandise at discounted prices.
Reference: women merchandise at discounted prices.
For Love21: Accessories for women.
Twelve sa pamamagitan ng Twelve: Upscale Los Angeles inspired clothing.
Faith21: clothing for plus-size women
Love21: contemporary line for women

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