Whatever the reason for her current appearance, I feel slightly vindicated - when she appeared on screen me and DH both gasped in surprise and I said "Where's Cheryl gone, she's fading away!"
DH made a slightly mean remark about her looking awful, but I think he meant sick. She does look very frail and childlike, although I think she is gorgeous, and speaking as a fat person she is probably better off being a teensy bit too thin for a short period than being excessively fat over a long period.
As for all the "body shaming" comments, I am inclined to agree that it is equally as rude to make nasty remarks about someone being too thin, as it is to be unkind about someone being fat. None of us can know how the other person got there, or what their real story is. It's wrong to judge, in terms of whether good or bad, right or wrong, but I'm no sure anyone would disagree with a factual statement that she looks extremely slender.