SPOTTED: Heidi Klum and Mel B kicking off ‘America’s Got Talent’ auditions Thursday in Pasadena, California. Mel showed off her toned body in a cleavage-bearing black dress, paired with matching open-toed heels while co-star Heidi showed off hers in a short white sleeveless dress, matched with strappy heels. Also on hand was Simon Cowell who will be making his AGT judging debut, replacing former AGT judge, Howard Stern.