When Forever 21 stormed Manila, the lines were horribly long and waiting was awfully unbearable. I didn't experience any of that though, I made sure I visit the store when the 'fad' wasn't anymore.
For my first F21 purchase, I bought a cropped top with a weird Madonna design on it. I don't really know why I bought it, I guess because it was cheap among the roster of P1k plus clothes hanging in there.