8 Beauty Essentials to Keep in Your Overnight Bag If You're Having an Adult Sleepover

The Kevyn Aucoin Beauty The Volume Mascara ($28) is so slender that it will fit in practically any accessory. But it's not just a practical choice: the slim tube delivers a va-va-voom look that packs enough of a punch that it's the only eye makeup you'll need. Wear it for an a.m. coffee, but not if you've got plans that afternoon — you'll look so hot, there's a chance you kids might be compelled to try for round two.