Simon Cowell is seen stepping out for a stroll alone after 'heated discussion with Lauren Silverman'

AGT brings back judges Simon Cowell, Heidi Klum, Howie Mandel and Sofia Vergara for Season 16

Simon Cowell has a 'heated discussion with Lauren Silverman in the street'

Simon Cowell Shares Update on His Recovery After Bike Accident Last Year (Exclusive)