Probably because they weren't from an actual photoshoot for the online product catalogue, but only behind the scenes pictures of the video shooting for the television special, and they were later used to atvertise the show itself. Adriana stayed way less days in Purto Rico then the other models, and they didn't use her for the catalogue shoots at all. The fact that these photos are even better then the ones featured in the catalogue is once again a proof of how good Adriana is at her job, and of how much VS is dumb for not using her for product shoots but only for commercials (and not much even for that).