The area at the head of the catwalk was reserved (encircled by red velvet rope!) for the media. I sat in the first row. What a great view! And multiple chances to get a good shot as the models progressed up the catwalk.
My 28-75mm lens worked well for the job. Fully zoomed out, a model fit the height of an image about 1/3 of her way down the catwalk, and then when she reached the end, waist through head fit nicely in my view finder. Fullest zoom is most flattering for models (or anyone). Think of it as opposite to wide angle, which makes a person look, well, wide.