Having cut her creative teeth at Bill Blass, Armani, and Ralph Lauren, designer Thomasine Dolan’s self-proclaimed “love of haberdashery” shines through in her debut collection’s preppy oxford shirts and adorable madras swimwear, which we previewed last night at Saturdays Surf. “It really started with the bikinis—and the clothes followed,” the designer explained of her line, set to be carried this spring at both the downtown surf boutique and Steven Alan. Though she had never tried her hand at cutting bathing suits before, Dolan stressed that each look in her line is meant to be layered atop one of the bikinis—a more dressed-up take on the typical beach cover-up. “Buttoned-up can be really sexy if the fit is right!” she said.