"This season was really about refining what we do best," Lindsey Thornburg said at a Spring preview in her Lower East Side boutique. The downtown designer is known for taking pieces often described as "hippie-dippie" and making them hip, and the latest lineup was Thornburg at her free-spirited finest. For the past several years, Thornburg's secret weapon has been a Nashville-based tie dye artist, and this time around, Thornburg gave her carte blanche to do as she wished (providing several Rothko prints as a starting point). The result was breathtaking kaleidoscopic swirls, each one more intricate than the last, displayed on rainbow-bright caftans, languid kimono gowns, and sweet baby-doll dresses cut from fluttery georgette silk. Thornburg introduced swimwear here with a range of triangle tops and retro, high-waisted briefs featuring her signature totem pattern. A maillot shown under a fuchsia silk shantung smoking jacket was a standout look. Discussing the aforementioned topper, Thornburg offered, "Maybe she lives in the Versace mansion." Elsewhere, simple black sack dresses and a reversible velvet bomber jacket were realistic options for those who shy away from the more psychedelic stuff.