It's really nothing you can do with Cher. It is what it is. She wore a lace Julien MacDonald dress to the "Burlesque" premiere in London.
This ensemble is made for a twenty year old with a slimmer body. Obviously, Cher still believes that she is that woman. She must also believe that she is Rihanna with that ridiculous red hair.
All I can say is God bless her and I wish I have half her energy and courage at her age!