Last updated at 10:46 PM on 26th May 2011
JB Gill went for a classic look in a tuxedo, Oritsé Williams went more casual in an open-necked shirt and gold tie, while Aston Merrygold went for his trademark 'meavage' style in an unbuttoned shirt under his suit.
Where are our A-list guests? The JLS boys (L-R JB Gill, Marvin Humes, Oritsé Williams and Aston Merrygold) looked sharp in their suits
Mint: Marvin was supported at the event by his girlfriend Rochelle Wiseman
Marvin Humes, whore wore a dapper suit and skinny tie, was joined by girlfriend Rochelle Wiseman.
The Saturdays singer wore a mint green Herve Leger bandage dress, with matching nail varnish and eye shadow.
A host of pop stars including the One Direction boys, Diana Vickers and Amelle Berrabah all attended the event to watch a preview of the JLS concert film.
Following in their footsteps: One Direction also attended
The movie was filmed during the band's recent O2 arena concert in London and the 3D production is set to be screened in cinemas nationwide for one day only on June 3.
The feature length film will feature JLS performing all of their hits, including Eyes Wide Shut, The Club Is Alive, Love You More and Everybody In Love.
It will also feature never-before-seen interviews and backstage footage of Marvin, JB, Oritsé and Aston.
Pop stars out in force: Diana Vickers (left) and Sugababe's Amelle Berrabah arrived at the Soho Hotel
Read more: http://www.dailymail.co.uk/tvshowbiz/article-1391315/The-Only-Way-Is-Essex-Billie-Faiers-Mark-Wrights-mum-turn-JLS-premiere.html#ixzz1NXJEfnm7