Fashion girlies, meet your new wardrobe staple, period. Finding the right things to wear under this year's hottest trend, a gauzy dress, can be a pain unless, of course, you're on vacation. Plus, you can really express your inner fashionista at the beach with this street-style trend. A 2019 study found that, every year, about 7.5 million festival outfits are single-use. This model with a white...