Backstreet Boys are ALL back! Entire group reform for first time since 2006 on Good Morning American stage in front of screaming fans

It's almost 20 years since they first formed, and six years since their last reunion as a five-piece. And today the Backstreet Boys were all back in force again.
The five-piece group graced the Good Morning America stage, performing some of their classic hits, to a packed out crowd at Rumsey Playfield in New York's Central Park.
For the first time since 2006, Nick Carter, Brian Littrell, Howie Dorough, A.J. McLean, Kevin Richardson belted out the likes of I Want It That Way and Everybody (Backstreet's Back).
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Back with a bang: The Backstreet Boys performed on the GMA stage today in New York's Central Park, marking the first time in six years they performed as a five-piece

 

From the heart: From left, Howie Dorough, Nick Carter, A. J. McLean, Kevin Richardson, and Brian Littrell

They sang Incomplete for their opening number.
Richardson, 40, recently rejoined the group three months ago, following his 2006 exit.
He told the assembled fans about his return: 'I'm a person that follows my heart and gut, and my heart said this is the time.'

 

Bringing the house down: The band performed some of their favourite hits for the screaming crowd

 

Big smiles on a special day: The group looked happy to be back as a five-piece again

 

 

Tragedy and triumph: Nick lost his sister to an apparent overdose earlier this year, but seemed to have a spring back in his step today

Following their performance of Incomplete, GMA's news anchor Josh Elliott dedicated the track to host Robin Roberts.
It comes after news today that Robin's mother Lucimarian, 88, passed away. Roberts bowed out of GMA a day early for medical leave for a bone marrow transplant a day early, explaining something had happened at home.
The Backstreet Boys have sold a staggering 130m albums worldwide - and are currently the top trending topic in the world following their GMA appearance.

 

Hitting the right note: Richardson, left, recently returned to the group after quitting in 2006, seen here with Carter

 

New material: The band are set to release a new album next spring to coincide with their 20th anniversary

But there has been heartache for some of late.
In February Nick Carter, 32, tragically lost his sister Leslie, 25, from an apparent overdose.
And in July 2011 McLean, 34, checked into rehab for 'personal reasons' telling People.com at the time: 'I want to be healthy and perform and sing for people at my very best and happiest.'
The band a now working on a new album, set for release next spring to mark their 20th anniversary.

 

Hands in the air: McLean looked back on form following his recent rehab visit for 'personal issues'

 

Bringing some pop: The band act up in from of the GMA hosts during their onstage turn

 

When they were young: The Backstreet Boys in 1995, two years after they formed