Losing weight is a constant new-year resolution year after year for most people, and a list of celebrity diets shows that stars are no different.

While singer Elton John underwent a series of lamb-urine injections to lose weight, actress Christina Ricci resigned herself to only salads to get her cheeks "ultra hollow", reported the New York Post.

Designer Karl Lagerfeld advised: "At dinner parties, slide the food to the centre of the dish and later squeeze it all together on the side of the plate. So as not to offend the host, occasionally put the fork to your mouth and make believe."

Singer Michael Jackson reportedly used to keep his weight down with lots of self-administered enemas, but he later needed a tampon to control "embarrassing leakage".

Actor John Malkovich ate "nothing but Jell-O for months," to lose up to 31 kg.

Oscar winner Adrien Brody, who lost more than 13 kg for Roman Polanski's "The Pianist," was quoted as saying that he went on an all-egg diet.

"Roman had me eat two hard-boiled eggs a day for six weeks. My skin became translucent," he said.

While film producer and actor Howard Stern lost weight by eating steamed potatoes with no toppings six times a day, Matt Damon went on an extreme no-fat, no-sugar diet to shed weight for his role as a Gulf War soldier in "Courage Under Fire."