Looks from Jason Wu and Balenciaga are among fall finds at Gail Rothwell.

25 Park
“We carry tons of under-the-radar designers you can’t find elsewhere,” says owner Alison Brettschneider, who loves Lucien Pellat-Finet’s reversible destroyed-skull turtleneck. The boutique also carries pieces by Matthew Williamson, Rick Owens, Hache, and Helmut Lang. 2415 Main St., Bridgehampton, 537-7525

Big Drop
The Patterson J. Kincaid oversize boyfriend sweater with suede elbow patches is store manager Michelle Gagliardi’s sweater of choice. “It’s a lightweight knit, so it can be worn in summer or fall,” she says. Joie, Feel the Piece, and 525 America are among the other labels carried here. 66 Newtown Lane, East Hampton, 604-6400

Blue & Cream
Shoppers flock to Blue & Cream for a diverse selection of contemporary sweaters in a variety of materials. “Customers have been gravitating to our B&C private-label shawl and pop-collared styles in loose loop weave made with imported Japanese cotton,” says owner Jeff Goldstein. 60 The Circle, East Hampton, 329-1392

Brunello Cucinelli
Look no further for innovative knitwear such as knit capes, sweaters with unexpected adornments such as ostrich feather detailing, and cashmere updated with Fair Isle and intarsia patterns. 39 Newtown Lane, East Hampton, 324-3400

Christopher Fischer
Cashmere Christopher Fischer offers premium cashmere sweaters in modern cuts. Store manager Grace Burliuk recommends the shop’s ponchos and waterfall sweaters—both slouchy looks merging comfort and style. 52 Jobs Lane, Southampton, 204-9090; 67 Main St., East Hampton, 907-0900

Gail Rothwell
“Our style is classic, chic, and understated,” says owner Gail Rothwell, who recommends Céline’s black and white turtleneck swing sweater. “It looks great with a belt.” The boutique also carries labels such as Hania by Anya Cole, Allude, Jason Wu, The Row, and Balenciaga. 66 Newtown Lane, East Hampton, 324-6666

Gloria Jewel
Owner Megan Chiarello’s fall favorite is a chic Claudia Nicole striped cashmere sweater. “It’s cozy, and you can wear it in summer or fall with skinny jeans.” Sweaters from Autumn Cashmere, 360 Cashmere, Margaret O’Leary, and Chiarello’s own label fill the shop. 125 Main St., Westhampton Beach, 998-0882; 2486 Main St., Bridgehampton, 613-6034; 136 Main St., Amagansett, 907-4095

“Our classic cashmere turtlenecks never go out of style,” says president and CEO Monica Belag Forman. “They’re available in many varieties, such as with color blocking, ribbed trims, fringes, and in longer silhouettes.” 2 Newtown Lane, East Hampton, 329-8139; 53C Jobs Lane, Southampton, 204-0207

Michelle Farmer Collaborate
The boutique features new and limited-run designers, as well as the option of customizing pieces. Manu’ Cashmere, imported from Italy, constructs owner Michelle Farmer’s favorite lightweight poncho. “Throw it over some white jeans in the summer or wear it into fall,” she says. 2491 Montauk Hwy., Bridgehampton, 604-1850

Minnie Rose
Here, the cashmere color-blocked ruana and its Wild West fringed cardigan are on-trend this fall. “Each piece that I create allows a woman to be trend savvy without losing her sophistication,” says founder Lisa Shaller-Goldberg. Montauk Beach House, 55 S. Elmwood Ave., Montauk, 668-2112

Like what you're reading? Get it delivered straight to your inbox. Sign up now for our newsletters >>