Photo Flash: First Look at Kieran Alleyne in West End's THRILLER LIVE

Kieran Alleyne last night became the first of Thriller Live's young West End MJs to return to the show the sing as the adult Michael Jackson. It was for one night only - Kieran is now a successful 18-year-old recording artist working in the UK and the US - to celebrate the show's 5th birthday and the start of its record-breaking 6th year at the Lyric Theatre, where it holds the record as the longest ever run in the theatre's 125-year history having completed over 2,000 performances. Check out the photos below!

"What an amazing feeling to perform back on stage," he told his 15,000 Twitter fans after the show, where he sang the Jackson classic She's Out of My Life, Man in the Mirror and joined the entire company onstage for Heal The World and the finale."

Kieran was a shy 13-year-old Leicester schoolboy with no formal acting training when he was chosen in an open audition from thousands of young hopefuls for a starring role in the West End, singing the songs of the young Michael Jackson in Thriller - Live. Opening night in 2009 was a glittering celebrity premiere, with an audience packed with major pop and rock stars and even Michael Jackson's eldest brother, Tito Jackson in attendance.

Kieran was a sensation, won rave reviews from the critics and he then went on to wow audiences for a further two years, touring the world with the hit show and he even appeared in a massive arena version, performing before tens of thousands. Now aged 18 and dubbed a young British Chris Brown, Kieran is forging a new music career as a rising R&B/pop recording artist creating an exciting buzz in both the UK and US. His song Atmosphere was selected by Radio 1 for airplay by Nick Grimshaw, Greg James and Scott Mills and he has been working closely with prominent urban music executive, Max Gousse, under his new label Artistry Worldwide Entertainment, distributed through the UK division of VIRGIN/EMI. Gousse has discovered and worked with some of the top artists in the business like Beyonce, YG, Ron Isley and Ty $. Kieran caught Gousse's attention through his YouTube channel, where the singer was able to create a massive fan base and collect more than 400,000 YouTube views of his original content and covers of his favorite songs. He also recently became a style ambassador for Adidas Neo, along with Justin Bieber and Selena Gomez. Thriller - Live is a spectacular concert-style show created to celebrate the music and career of the world's greatest entertainer and the undisputed King of Pop, Michael Jackson.

Thriller - Live was originally conceived and created by AdrIan Grant, a long time associate of Michael Jackson, and author of Michael Jackson - The Visual Documentary. He said: "It's an amazing achievement to have a show running in the West End for 6 years, but I always believed it had the potential to run and run due to wonderful music of Michael Jackson and his popularity around the world. I'm sure he would be very proud that the show continues to break records, as he did during his own life-time." Thriller - Live is produced by Paul Walden and Derek Nicol for Flying Music in association with AdrIan Grant for Key Concerts. Thriller - Live is currently booking until Sunday 28 September 2014.