TV Article 'Perks of Being a Wallflower': Emma Watson and Ezra Miller tear up the dance floor -- EXCLUSIVE CLIP By Adam B. Vary Adam B. Vary Staff Editor EW's editorial guidelines Published on September 7, 2012 06:00PM EDT Anyone who’s ever been to a school dance has likely had that moment, when they’re standing on the margins of the dance floor, watching bolder, older kids cut loose with abandon in the center, wondering if they themselves have the nerve to step into the crowd and join in. That kind of adolescent yearning is at the heart of the coming-of-age drama The Perks of Being a Wallflower, writer-director Stephen Chbosky’s adaptation of his own best-selling YA novel of the same name. In this exclusive clip from the film — which premieres Saturday at the Toronto Film Festival and begins a limited release in theaters Sept. 21 — young freshman Charlie (Logan Lerman) is the kid on the sidelines, and his new friends, seniors Sam (Emma Watson) and Patrick (Ezra Miller), are the ones tripping the light fantastic on the dance floor. Check it out below: Follow @adambvary Read more: Beyond Oscar buzz: From sci-fi to docs, more Toronto films we can’t wait to see Emma Watson on ‘The Perks of Being a Wallflower’ and leaving Hermione behind Emma Watson breaks free in ‘The Perks of Being a Wallflower’ trailer