Some types of underwear are made for date nights, and others are made for period weeks. Different kinds are appropriate for different occasions, which is why your drawers should be filled with a variety of them. It's always great to have options, after all. That's why every girl should own these different types of underwear:
Men love thongs, which is why they're great to wear on dates. However, they're also great to wear when you're worried about panty lines. If you have a tight skirt that you can't wait to wear or a pair of light pants that are easy to see through, then place a thong underneath it so no lines are visible. It's an easy fix to a common fashion problem.