Flame nails have been a huge trend for a few months now, but these holographic nail stickers take it to the next level. Missy Elliott even wore them at Essence Fest in July. Alecia Mounixay of @thepaintedkoi on Instagram makes the stickers. They pop right onto a bare nail and are sealed with acrylic or liquid gel. If you aren't into the flames, there are other fun designs to choose from.