Your step-sister has a date planned, and you’re her only help - or at least, her most honest, trusted family member. So what’s the deal? She wants to tease her date, but not give him too much. She’s already dressed skimpy enough, but knows that it’s bound to happen - her panties will totally show. And she needs your help deciding which ones will give just a little tease... or something like that. Hmmm.