Happy to bet my last dollar that if you met Kirstie in person, she would be a lot slimmer than she looks in photos. I absolutely guarantee it.
Not that it matters.
These threads are deluded, really.
I am 5"10' and a size 10. By anybody's standards, I am slim. However, if someone snapped me in my swimsuit coming out of the sea unawares, no doubt my slightly flabby thighs would not look their best, nor would my post-baby, non-washboard stomach, and modest, non-surgeried boobs. I look fine in clothes, but not exactly perfect in a swim suit. Luckily for me, I'm just fine with that.
It's not men who make women feel bad about themselves; it's we women.
I think Kirstie looks great - her biggest asset is her confidence. She is her own person, she oozes solid self-esteem (which is so refreshing) and she isn't a style clone or automaton. Good for her.
Slim women who need to bash women of different sizes and shapes need to take a good look at themselves. If we're happy with our ability to be slim, why should we care about what other women do with their own bloody bodies?!
Dressing it up as concern for someone else's health (especially when they're not even borderline obese) is eye-rollingly ridiculous.
Again, I'm certain that if you met her in real life you'd be very surprised.