like the other guy said, go with a dark pair of jeans (black or dark navy), collared shirt with sleeves rolled up or v-neck (stick with something relatively tight).
for shoes i'd recommend neutral...
i think the girl wanted you to have an orgy with her family, and that's why she requested her family members to dance salsa with you (so you can feel comfortable with them)
they were even mirin'...
EDIT: i should elaborate; if she's a sloot and you just wanna phuck her, telling her you've had a crush on her is like the worst thing to do man. srs. she'll just think you're a...