As Hermione Granger in Harry Potter, Emma Watson rarely has an occasion to show off her figure.
But, clearly proud of her toned physique, the 21-year-old actress decided to wear a pink sports bra and very low-slung leggings to display her toned midriff as she hit the gym.
Emma teamed her exercise clothes with a grey jumper tied around her waist and a headband to keep her hair out of her eyes.
Toned: Emma Watson showed off her flat stomach in a pink crop top and low-slung leggings as she hit the gym in Pittsburgh yesterday
Athletic: Emma, who is in Pittsburgh to film her new movie, has been keeping busy with regular trips to the gym
Since she is clearly in great physical shape, she can now devote her attentions to more spiritual matters.
She was clutching a book said to ‘offer a potent possibility to transform your life’.
The U.S. best-seller A 3rd Helping of Chicken Soup For The Soul features 101 ‘heart-warming stories to inspire and motivate you to love unconditionally; live more passionately and pursue your heart-felt dreams with more conviction’, according to the publishers.
Miss Watson, who is worth an estimated £24million, has been single since splitting with musician and model George Craig last year.
Her final appearance as magician Hermione Granger is in Harry Potter And The Deathly Hallows Part II, released in July.
Emma has clearly been working hard on her physique, with not an inch of fat to be seen on her lean figure as she headed back to her temporary home in Pittsburgh yesterday.
Book worm: Emma was reading A 3rd Helping of Chicken Soup for the Soul
In a recent inerview, Emma said: 'It's just not something that I aspire to, to be super-skinny. It's not inspirational at all for me.
'I'm lucky that I'm this size naturally. I don't diet...I love chocolate and pasta and I love baking. I make a great raspberry amaretto cake!
'There is so much pressure on girls our age to be smart and pretty and funny and skinny - they have to be everything.
'I definitely know what that pressure is like, but my philosophy is to eat what you like and be healthy and exercise.'
Fashionista: Emma recently topped a best-dressed poll thanks to her red carpet outfit choices, seen here left at the BAFTAs in February, and right at the most recent Harry Potter premiere last year
Screen star: Emma as Hermione Granger with Daniel Radcliffe as Harry Potter and Rupert Grint as Ron Weasley in Harry Potter And The Deathly Hallows: Part 1Emma is in Pittsburgh working on her latest film The Perks Of Being A Wallflower.
She plays high school senior Sam in the film, adapted from the 1999 book by Stephen Chbosky.
Sam and step-brother Patrick take protagonist Charlie under their wings and expose him to their hard-partying, drug-fuelled world.
The hard-hitting storyline deals with suicide, abortion, homosexuality and child abuse, and the film is slated for release next year.