1. Face Shimmer

Wanna get Hayden's fresh-faced glow? Snatch up this HIP Illuminating Highlighter in Shimmer, by L'Oreal ($9.69, drugstore.com). Then smooth over your eyes, cheeks…even your lips!

2. Turtleneck

Turtlenecks are back this fall, but that doesn't mean you have to totally cover up. Rather than sweat in a long-sleeved version, we dig a shorter-sleeved look like this one ($22.50, delias.com).

3. Wide Belt

Dress-up any turtleneck, sweater, or shirt with a simple, wide belt. No need to do the corset-look if you don't wanna. We personally like wearing belts like this one ($16.50, alloy.com) right at our waists, like Hayden.

4. Oversized Bag

Mixing brown with black or gray is no longer a faux pas! Especially if your hair is brown or blondish. Oversized bags are also big this season (pun intended). Go for a stylish tote like Hayden's, or saddle up to this single-strap Saddle Bag from Delia's ($34.50).

5. Gray-Blue Jeans

Love the worn, ring-spun jean look? Pick up this pair of Wide Waist Trousers by Truck Jeans ($39.50, alloy.com). Like Hayden's, they're a muted gray-blue -- not a bright-blue color -- so they'll bring out your heather gray top (instead of taking away from it).