Fourteen-year-old Kieran competed alongside counterparts from Italy, Germany, Denmark, Sweden, Russia, Ireland, Poland, Hungary, Lativa and Moldova, after qualifying for the Worlds at the European Championships earlier this year.
He wowed the viewers and judges alike with a set of impressive moves, including body popping, tutting and locking.
On his win, Kieran said "I just didn't know what to do when I heard the result. I couldn't believe it, it's amazing."
"Everyone was congratulating me and I couldn't stop smiling.
"It hasn't sunk in yet though. I just wanted to enjoy the experience - I wasn't expecting to win or anything like that."
Kieran caught the dancing bug when he joined Kayzar two years ago. He had always enjoyed dancing but only began to take it seriously after meeting Kayzar's founder and choreographer, Nader Boulila who helped him to realise his full potential.
Now, two years later, Kieran has had a busy and fantastic at Kayzar - performing at Essex Police's 2Smart Tour 2010, showcasing at the internationally acclaimed Breakin' Convention and succeeding in one of the most prestigious competitions of them all!
Nader said "We are all so proud of Kieran - he's such a talented and dedicated dancer who trains really hard - he deserves such an amazing win.