Lauren Silverman flashes underboob as she cosies up to fiancé Simon Cowell after BGT

BGT's Simon Cowell threatens to storm off after David Walliams tells him to 'go home'

BGT's eagle-eyed fans 'rumble' Keiichi Iwasaki's beer magic trick on semi-final

BGT's Amanda Holden wows fans in plunging sheer backless dress for semi-finals