Daniel Radcliffe is giving his mind, body and soul to a new theater role — but especially his body! The 23-year-old actor stepped out looking skinnier than ever on Thursday, July 18, after appearing on stage in the Martin McDonagh play The Cripple of Inishmaan.

Radcliffe looked thin, pale and exhausted while leaving Noel Coward Theatre in London wearing a tight blue shirt, jeans and cap. Before Harry Potter fans became too concerned about the star's gaunt appearance, omg! spoke to his rep, who explained the show "is a very demanding role, physically."

"At every night's performance, there is large crowd at the stage door and he takes the time to sign autographs and pose for pictures at length," Radcliffe's rep said. "Regardless of the extreme London heat wave."

The Cripple of Inishmaan is a dark comedy about a 17-year-old orphan who tries to escape his unhappy life when a Hollywood film crew arrives in town. In an interview with Time Out: London in June, Radcliffe said he was working on writing his own screenplay and using McDonagh as inspiration.

"It's a serious attempt at a black comedy. A very, very, very dark comedy," the actor said of his work. "I've always loved the way Martin McDonagh writes. That very economical but rhythmic way he writes the interplay between characters. You learn about their relationships through how they're talking not what they're saying. That's the kind of writing I love and I aspire to. And it's got a fair amount of blood in it, too. In that way, I'm just ripping Martin off!'"