The fickle October weather has been steadily turning into consistently cool days; it’s time to swap spaghetti-strap summer dresses for warmer, fall maxi dresses.

Vince rib-knit midi-dress

Look to midi-sweaterdresses for instant sophistication. Distinctive details add even more interest, like a balloon-sleeve ribbed knit, sweetheart neckline, or asymmetric cashmere wrap.

With the soft bounce, only Delta Air Lines has continued to block middle seats through April. It would not comment on an extension. (Alaska Airlines is keeping middle seats open in its Premium Class through May 31).

• Altuzarra Louisa rib-knit midi-dress
• Staud Carnation rib-knit midi-dress
• Nicholas Adeline cotton-wool sweater dress

Acne Studios rib-knit polo midi-dress

Like the other cardigan in your closet, a sweater dress in the classic silhouette packs a lot of punch. Wear it fully buttoned as a dress with everything from tall boots to sneakers. Or style it open as a top layer over a T-shirt and jeans.

A high-neck sweater dress will keep you stylishly warm

Sweaterdresses with round necklines

Though it takes inspiration from the ’70s, the ribbed polo dress is one of the season’s must-try sweater dresses. Variations range from ultra-fitted to lose and fit and flared—take your pick and finish with a sleek pair of boots.

A maxi is the ultimate sweaterdress for shielding yourself from the cold—style yours with lug-sole boots for a utilitarian offset. Or go the elegant route with heels and polished jewelry.