Emma Watson was in tears at the premiere of her new film The Perks Of Being A Wallflower in Toronto, Canada - because the movie is such "an emotional rollercoaster".
The Harry Potter star admits she struggled to keep her composure for a question and answer session after the film's Toronto International Film Festival debut - and had to go and "fix" her face during the screening.
She explains, "This is, like, the third time I've seen the movie and it still makes me cry. I had to run out and try and fix my face for the Q and A because I was such a wreck."
Emma Watson, Nina Dobrev, Logan Lerman and their castmates were given a standing ovation after the screening.
The film premiered in Los Angeles on Monday night (10Sep12).