Grammy Award winner Toni Braxton stunned fans during a recent concert at the Flamingo in Las Vegas, Nevada when she broke down in tears while discussing her autistic son. The UNBREAK MY HEART singer is married to musician KERI LEWIS and they have two sons, DENIM COLE, four, and DIEZEL KY, three. A source tells MSNBC's The Scoop, "She was dedicating I WANNA BE (YOUR BABY) to her son, and then she said something about how people have warned her that she shouldn't talk about it, but said that he was autistic, and then she started crying and rushed off stage. It was very emotional." Fans were moved by Braxton's honesty and have shown a tremendous amount of support. One fan, who also has an autistic child, wrote to the star saying, "Please don't lose heart. You'll see great improvements with your little one. May God bless you and bring your little one around soon."