Simon Cowell
Cowell was accompanied by Lauren Silverman and the writer of I Can\'t Sing! Harry Hill. POOL

The stars of British TV turned out for the opening night of the new West End musical I Can't Sing!

Based on the reality TV show The X Factor, the show features a character modelled on Simon Cowell and the man himself turned up to come face to face with a parody of himself.

The notorious reality show judge, music mogul and new father, arrived on the red carpet with American socialite, Lauren Silverman, who gave birth to the couple's baby son Eric less than six weeks ago.

36-year-old Silverman looked stunning, showing off her trim post-baby figure in a fitted black dress, while 50-year-old Cowell donned his trademark glasses.

The couple were joined by a host of showbiz friends and colleagues for the glittering opening night of the new musical, written by Harry Hill.

Sinitta made a show-stopping entrance with Louis Walsh. POOL

Fellow Britain's Got Talent judge Amanda Holden braved the wet weather in a cream and white Victoria Beckham tux matched with shorts.

Cowell's former girlfriend Sinitta made a characteristic show-stopping entrance in a bold, plunging, red gown. The So Macho singer was accompanied by retired judge Louis Walsh.

And there were the young celebrities who had found fame through Cowell's TV shows.

Myleene Klass, who first came to fame on Pop Idol, the precursor to The X Factor came to lend her support, looking stunning in a black foil-print dress from her Littlewood collection.

Mylene Klass
Myleene Klass first came to fame on the reality show Pop Idol. POOL

Former X Factor contestant Stacey Solomon, who was third on the 2009 series of The X Factor wore a white floral strapless dress.

Boy band Union J, who were formed on the show and have gone on to forge a career despite not winning the talent contest, also turned out in support the show.

And bringing a touch of Hollywood to the night was actress Kate Beckinsale, who stopped to chat with David Walliams and property tycoon Nick candy.

The musical tells the story of a girl called Chenice who ends up auditioning for a TV singing competition.

The show stars former EastEnders actor Nigel Harman as a 'Simon Cowell-like' character.

Cowell recently revealed that he is re-joining the judging panel ahead of the next series of The X Factor and has also persuaded former judge Cheryl Cole to make a return.

It's hoped that the new line-up will revive the show's popularity after having suffered waning viewing figures.