Simon Cowell has let his hair down - and his chest hair out - at the launch of London Cabaret Club, wearing a whit shirt unbuttoned almost to the waist.

The talent show mogul and new dad was joined by girlfriend Lauren Silverman and pals Louis Walsh and Sinitta for a night of cocktails, entertainment and relaxing.

They enjoyed performances from former X Factor winner Alexandra Burke and Brian McFadden - who according to the Mail Online sang an acoustic version of Westlife hit Flying Without Wings - and watched glamorous cabaret acts from girls in sparkly leotards and see-through tutus.

Among the other guests at the event were former Made In Chelsea star Millie Mackintosh in a backless white jumpsuit and black hat, Brian's model wife Vogue Williams and new pop couple Natasha Hamilton and Ritchie Neville.