Wispy, undone, and downright sexy — this is when you're after a straight-from-bed bangs look. "You want it to feel light and fall naturally," said Kathy Benghanem, a hairstylist at NYC's Gemini 14. She added that wispy bangs work best on someone who has at least a three-inch-long forehead, but it's not a total dealbreaker if yours is a little shorter.