(First of all: sorry for being somewhat late to the party, but I'm just now seeing these new posts and want to respond <3)
I definitely agree with you that the red-leather-pants photo makes them look a tad unhealthy. It's not even necessarily the weight that they're at the bothers me, per-se, but how they're carrying it (maybe?). Because let's face it, Inna Pilipenko, AKA probably one of the skinniest models ever, was tinier than them and still glowed. They look a little worn.
But all that being said, I do think that they looked better than they did in their chubby phase, and maybe it is just the makeup/angle.