Simon Cowell shows off his new slimmed down figure and muscular arms at America's Got Talent filming

Sofia Vergara and Heidi Klum sport the same outfits on the Pasadena set of America's Got Talent

Heidi Klum is edgy chic a printed black sweater and leather pants at America's Got Talent taping

Sofia Vergara rocks crop top while Heidi Klum wows in orange gown at America's Got Talent taping