Flanked by other family members (her mother Georgia, her younger son Elijah Allman and Mary Bono, Chaz's stepmom and the widow of the late Sonny Bono), the Oscar and Grammy-winning star, 63, chatted up the famous family of another "DWTS" contestant: Courteney Cox and daughter Coco plus Rosanna and Patricia Arquette (all cheering on David Arquette, whom Cher called "darling").
Beaming and watching intently throughout the night -- along with her mom and Mary Bono -- the "If I Could Turn Back Time" singer got emotional after her 41-year-old son (the show's first transgendered contestant) performed with Lacey Schwimmer. "She looked so proud!!" a witness says.
After the show, she lingered on set chatting with her family and other "DWTS" castmembers, and posed for pics with Chaz, Schwimmer and other family members.