Demi Moore is doing her part to make sure she keeps looking great in fashion designers clothes. The 47-year-old actress and her 32-year-old husband Ashton Kutcher started the Master Cleanse diet on Saturday, the same diet actress Beyonce Knowles used to get ready for her role in Dreamgirls.

This latest celebrity gossip comes at the same time as news that the ever-fabulous Marlo Thomas has been cast as Moore’s mother in an English language remake of the French comedy titled LOL: Laughing Out Loud. The still-beautiful 73-year-old Thomas was a top fashion star of the 1960s when she played the lead role of Anne Marie in the popular sit-com That Girl.

Moore, a red carpet favorite of top ten fashion designers, insists she’s not using the program to lose weight, saying “This is about health!!!”