H & M pulls everyone in eventually, whether they admit it or not. The young pros, teens, and landed socialites have all dropped a few euros on the fastest, flimsiest spin-offs in town. Good-quality jeans and winter coats are sturdier bets; the lingerie's fun and cheap enough to be nearly disposable. There's even a kids' line. Try to go in the morning, as the lines for the changing rooms stretch out in the afternoon. Métro: Opéra/Grands Boulevards.