Thou shalt leave the house prepared.
This is what celebrities carry in those tiny clutches:
1. A retractable lip brush. "I make sure there's enough lipstick on the brush for several touch-ups," Wilson says. "It takes up less room in your bag than a full lipstick and allows for more precise touch-ups."
2. Blotting tissues. "They let you remove shine without caking on powder," Dubroff says.
3. A tiny pot of concealer with a couple of Q-tips. "It's the best way to erase eye makeup that falls underneath the eyes, or redness around the nose," Goodwin says.
Next: 10 makeup mistakes that add 10 years