Hung Over Harry? Styles Sick On-Stage After Late-Night Party with One Direction Bandmates

July 11 2013, Published 2:15 p.m. ET
Justin Bieber isn't the only teen idol with a taste for partying. Harry Styles has been spotted partying it up at bars across the U.S. and Canada in recent weeks and it could be taking a toll: During a One Direction concert on Monday night, Harry rushed off-stage and missed an entire song, apparently ill, after a night of partying.
Harry has never been shy about enjoying the occasional night out at the pub, especially in England, where the 19-year-old is of legal drinking age. In April, he reportedly got so drunk at Newcastle nightclub Perdu, he had to be carried out. (His reps later denied he was carried.)
And he's taken advantage of the American bar scene as well. On June 30, he was spotted partying with friends at the notorious Coyote Ugly Saloon in NYC.
On July 7, Harry and the band rented out a bowling alley near Pittsburgh, PA, for Ashton Irwin, a member of their opening act, 5 Seconds of Summer. Staying close to midnight, the boys had such a good time that Harry's 1D bandmate Liam Payne tweeted the next morning, "My head hurts...Can't even begin to remember who won bowling..."
At the concert the next night, Harry appeared worse for the wear, and fans noticed, especially when he ran offstage after grabbing his stomach at the end of Teenage Dirtbag.
As the rest of his bandmates continued on with Rock Me, covering his solo, Harry hunched backstage throwing up, according to eyewitnesses on Youtube.
"I was there!" user amadak822 posted. "He got dehydrated and overheated and ended up throwing up backstage. :( He missed Rock Me but came back right after and said, 'Sorry bout that!'"