Ready or not, it’s time to put away the sandals. Yes, even if this is Houston and it's still hot. Let's face it; most of us are in air conditioning the whole summer anyway, wishing we were wearing a cozy sweater and, well, boots. And maybe mittens.   

Here are four key boot styles you'll need this fall.

CHUNKY BOOTS

This is the most current silhouette, vaguely reminiscent of 90's grunge, and there are interpretations for every possible scenario. Whether you're a rocker chick or the office fashionista, you'll find something that works for you. Wear these with skinny or cigarette trousers, or cropped culottes. Better yet, try them with a midi skirt. Just make sure the heels are nice and chunky. Like, I can stomp all over this, here. Add a plaid flannel shirt and you might get carded. 

Aldo Serinna Boots, $110; Chlo Gold-Trimmed Textured-Leather, $995; Acne Studios Jagger Eyelet Booties, $1,000, Jeffrey Campbell Metcalf Block Boots in Snake, $199.

ANKLE STILETTOS

These are sexy. Wear these with skinny jeans for a date night, or try them with a dress to add some edge. Laceups and unique textures are fresh. And hot. 

Jimmy Choo Amore, $795; Mango Heel Lace-Up Ankle Boot, $119.99; Jeffrey Campbell Vain Shearling Booties, $180.

KNEE-HIGH

Classic, knee-high boots always make an outfit look pulled together. This season, Gucci dominates with a mod interpretation, so look for a similar shape—block heel, round toe—for the most up-to-the-minute style. Try this '60s look with shift dresses or mini skirts and tights to complete the effect. But seriously, any knee high boot will do. The equestrian look is timeless. 

Old Navy Tall Riding Boots, $44.94, Gucci Leather Horsebit Knee Boot, $1,450.

CUTOUT BOOTIES

These are kind of bonus points. If you already have all of the above styles, this one's a great addition. It's the cool girl's answer to flats, uber-hot with boyfriend jeans. Very European, they say, I'm too sexy for this party. Effortless.

Loeffler Randall Reeve Lace-up Booties, $425; Nasty GallEverly Cutout Boot, $188.