I agreed at first glance, but thinking about it, people never believe I weigh what I do. Even my midwife was shocked when she weighed me at my booking appointment! I was hovering about 15st7lbs at 5'3", yet I'm a size 16, sometimes I can get in a 14. I do have massive boobs and I'm quite well proportioned, so that might explain why I look smaller than I am, but I'm not especially muscular or big-boned or anything, so I don't really understand it myself. Last year I managed to lose about five and a half stone (and then put it straight back on), and I was a flabby size 12, so I probably would have to lose the same amount of weight as Ms. Nasir to achieve the same kind of transformation. Who knows.
However, I read about her weight loss a long time ago and I'm sure it only said she'd lost about 3 stone. Maybe it is a case of each magazine and newspaper trying to have a more sensational headline than the last and adding a bit on each time.