fall fashion caitlin fitzgerald

Photographs: Robert Trachtenberg

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Country Road

Caitlin FitzGerald

Where you'll see her: She plays the long-suffering yet impeccably turned-out housewife Libby Masters on Showtime's Masters of Sex, now in its second season.

Trend report: The buffalo plaid and tartan patterns in these pieces may say "country," but the styling—coat as cape, socks scrunched just so over towering boots—gives the look a high-fashion vibe.

Personal style: "I like to wear up-and-coming and established designers when I get dressed up," says FitzGerald, who favors pieces from Houghton, Thakoon and Jason Wu. But for day, the self-professed tomboy says she's "never met a leather jacket or ankle boot I didn't like."

Fall obsession: "I love a big chunky sweater. My mom [Knitting for Dummies coauthor Pam Allen] is in the knitting world in a big way and owns her own yarn company, so I have a real soft spot for knitwear."

Fashion crushes: "Tilda Swinton is a mad genius, and Cate Blanchett, definitely. They both take risks, but their clothes never wear them. They look at ease all the time and seem really authentic."

Coat, Hilfiger Collection, $790. Dress, L.L. Bean Signature, $139. Socks, Tory Burch. Shoes, DKNY.