I always wondered what the difference was between Forever XXI at Yonge & Dundas and Forever 21s around town. I remember hearing they sold some men's clothing at Yonge & Dundas. Anyway, per their FAQ it looks like they distinguish flagship locations as Forever XXI, perhaps with merchandise for more than just teenagers:
What is the difference between Forever 21 and Forever XXI?
Forever 21 offers the latest fashions at a great value to our customers.
Forever 21 has been chosen as one of the top three teen shopping brands nationwide.
Thanks to the popularity of Forever 21, not only with young shoppers but also customers who are
young at heart, Forever21 has been able to create its flagship stores, Forever XXI, which occupy an
average of 24,000 square foot. per store.
Offering an exciting and spacious shopping environment with a variety of merchandise, Forever XXI
embraces everyone who wants the latest styles at a great value.