By Frances Cronin
Newsbeat entertainment reporter, Novello Theatre
Into The Hoods was on at the Edinburgh Fringe in 2006 and 2007
Britain's Got Talent winner George Sampson has been given a standing ovation at the opening night of his run in Into the Hoods in London's West End.
In the musical, George shows off his break-dancing skills and from the first glimpse of him fans were screaming.
The 15-year-old said he was pleased with the crowd's reaction: "They were great. A big crowd and lively as well."
Hundreds of young girls began yelling as soon as a picture of George Sampson was projected on to the stage curtain.
When he stepped on stage in person most of the audience at the Novello Theatre couldn't contain themselves anymore.
The fans, some with I Love George drawn on their faces, screamed with delight and yelled out, 'I love you George'.
Every time he returned to the stage the screaming started up again.
The teenager said he was more than pleased with audience reaction: "If they're lively that's all that matters. It was good."
George said he was more than happy with his first performance.
He said: "It's scary because people are criticising you. People are on you like a tonne of bricks, so you've got to perform your best.
"I tried my best, so, I think it all went well."
The modern day fairy tale is the West End's first hip-hop musical and George fits into the show really well.
He gets to display the dancing skills that won him Britain's Got Talent with a number of solos.
Fellow Into The Hoods actress and dancer, 13-year-old Molly Bouldings, has won numerous street dance championships but has found some of George's fans less friendly.
She said: "I've had girls throw money at me and call me horrible things and say they are gonna do things to me.
George Sampson started street dancing in Manchester
"I felt really upset cos I'd worked hard to dance with him.
"George is really supportive and it's great dancing with him."
After the show hundreds of fans waited outside the theatre hoping for a glimpse of the TV star.
They refused to leave chanting, 'We want George'.
The screaming was deafening when he did finally emerge with a giant minder protecting him from the eager fans.
Looking a bit overwhelmed, George signed numerous autographs before being dragged back inside.
"Wow. That was mental. I couldn't hear anything because there was loads of screaming," he added.
"I couldn't see anything because there was loads of flashing. I'm guessing it was good."