NAME_1 and her two roommates NAME_2 and NAME_3 plan a beach vacation. NAME_1 is a young, very attractive, slim brunette with C-cups and a cute face. NAME_2 is a science nerd, a bit flabby. NAME_3 is a fit gymbro, who can be a dick sometimes.
NAME_1 needs a new bikini and NAME_2 and NAME_3 decide to buy a few bikinis for her online. The idea is that NAME_1 models them at home and the three then decide which bikini(s) to keep. The collection ranges from sensible classics to borderline obscene pieces, including some really racy ones. NAME_1 hasn't seen any of them yet and is excited to try the bikinis in front of her roommates. She is ready to try them all. The package finally arrived and the guys prepare a kind of runway with spotlights in their living room for NAME_1. NAME_2 has a camera ready to later compare the bikinis. NAME_2 and NAME_3 reveal the bikinis one by one and have pre-sorted them from modest to "Can-I-really-wear-this-in-public?".
Write a lengthy sexy story as NAME_1 progresses through the collection.