Legendary fitness icon Richard Simmons has died at 76, according to multiple reports. TMZ appears to have broken the story first via its law enforcement sources, but Simmons’ representatives confirmed the death with ABC News. The flamboyant and eccentric Simmons had just turned 76 on Friday. Simmons, who was born in New Orleans, Louisiana, had even responded on social media to all of the well wishes that same day: Thank you…I never got so many messages about my birthday in my life! I am sitting here writing emails. Have a most beautiful rest of your Friday.Love,Richard — Richard Simmons (@TheW…