You have to take into account here that Christina Hendricks is 37 and 5'8" and Karlie Kloss is 20 and 6'1". Both have completely different body types anyway so comparing how healthy they both look is dumb. Kloss is prolly lives on salad and gym.
I wasn't specifically comparing those two ladies, nor was I judging one vs the other. I was simply using the two body types as a basis for general comparison - regardless of age and height.
That said, if Karlie Koss lives on salad and gym then I am very impressed and I find it more attractive, regardless of what her body size may be. I do not think that it is a disadvantage. I wish I could do that.