The lady in the article looks wonderful and must feel even better! Fair play to her!!
I am sure you look lovely, OP. Don't let this sort of thing bother you. The tabloids have always done this with weight-related stories. It's been going on for years. I would wager the lady in the article didn't say she was a size 4 herself. I remember years ago, possibly in the mid-2000s, Vanessa Feltz lost a lot of weight and looked absolutely great. I'd say she was probably a classic size 14 or thereabouts, although I'm not sure of her height, but all the articles claimed she was a size 10. The newspapers are always doing things like that and it is just silly. I think it can have a detrimental impact on people who are vulnerable to that type of messaging. False representations of sizes could lead to people striving to achieve ever smaller clothes sizes if they look at a person who is a "size 6" and think, "Well, that's not particularly thin." I've also seen it the opposite way, where a person who is clearly much larger is described in an article as a "curvy size 16". Some people, including on this site, seem to imagine that a size 16, even on a tall woman, is more akin to a 26!
I often think that women's sizes should just be done in inches and cm, like men's. It would ensure standardisation and consistency, and remove the whole "emotional" and "status" aspect of different sizes.
I do find these types of threads very interesting and informative for the huge variations in clothing sizes for women of similar weight and height. Individual builds, muscle/fat composition make a huge difference.
I can offer no practical comparisons, OP, as I am enormously fat. I'm fairly confident I am the largest person posting, or who has ever posted, on MN. I am having bariatric surgery in the autumn. Before anyone attacks me or sends me nasty PMs - please don't, I ask you sincerely - the surgery is 75% self-funded and 25% covered by health insurance. I would love to get down to a BMI just below 30 and often wonder what size I would end up at. I am 5 ft 8.5 in. and have a very broad and large build. The only time in my life I was within the normal BMI range, albeit at the higher end, was in my late teens, in the early 90s, and I was either a 14 or 16, depending on garment and shop.