While I know that she's had plastic surgery, I think this is more anorexia that anything else.
Word on Friends was that the three broads used to compete with each other by not eating.
They would supposedly brag about it.
"I had only half an apple today."
"I had only a small cup of consommé."
"I didn't eat at all today."
Shit like that.
The thing that broads do in Hollywood to stay thin is do coke, smoke (oral fixation) and drink tons and tons of diet soda.