LULU-395 Unaware of his girlfriend's big-breasted sister's extreme swimsuit, he is seduced

When I first met her, her older sister had won a beauty pageant and was currently a model. She had fair skin and an irresistible body. Her breasts were clearly bigger than my girlfriend's. The provocative swimsuit she'd been asked to wear for work was so sexy that I had the urge to see her in it. I sneaked into her house and spied on her trying it on, but just watching wasn't enough to get my dick riled up...