Diana Ross is reportedly set to sing at her son Evan's wedding to Ashlee Simpson.
Evan, 25, star of TV series 90210, began dating the 29-year-old singer - who is mother to five-year-old son Bronx from her previous marriage to Fall Out Boy's Pete Wentz - last year and they became engaged in January.
Now insiders have told E! News that soul sister Diana, 70, is planning to perform at the ceremony, along with her daughter Rhonda Ross Kendrick and fellow music legends S tevie Wonder and Smokey Robinson.
But despite the musical extravaganza that his mother is planning for his nuptials, Evan only cares about his bride-to-be.
He said: "Honestly, we could go and get married right now, wherever.
"We just want to be married. We're in love. This is the most incredible time I could ever think of in my life and I'm young, but the same time, I've lived a different life than most and I can't think of a happier moment."
Evan, who plays Messalla in the The Hunger Games: Mockingjay movies, said he knew he wanted to marry Ashlee "really quickly".
He gushed: "I was giving it time only because I wanted to give it time, but I would have asked her a month after I was with her."