For maximum sun protection, learn from Munn and don a neutral floppy hat. Its sandy hue perfectly pairs with everything. Guess, $35; guess.com.
2. Miranda Kerr
A wider brimmed Panama hat balances out a girly maxi. Urban Outfitters, $29; urbanoutfitters.com.
3. Charlize Theron
Inject a menswear-inspired piece into your wardrobe with a black-cord trimmed fedora. Paired with black accessories, the dark detailing can tie your whole look together. Eugenia Kim, $265; net-a-porter.com.
4. Jessica Alba
Break away from traditional straw hats and choose a darker shade for a more polished finishing touch. Sole Society, $19; solesociety.com.
5. Diane Kruger
A straw fedora with a golden wash can add warmth to your look. Stick to neutral bands or mix things up with blue satin stripes, like Kruger's. Vince Camuto, $48; vincecamuto.com.