Johanna Ortiz’s spring collection was a love letter to Colombia. Titled “Magdalena,” after the river that runs through the country, the designer offered a range of rich dresses and separates that have become her house’s staples.

Silhouettes carried through Ortiz’s signature femininity, including fluid skirts, wide-leg trousers and elegant halters, layered with fringed scarves and textured intricate bead work. But there was also a subtle shift, inspired by the women who shop her New York City boutique, toward more tailoring and structure.

That outpost, which opened last summer, has given her the opportunity to meet with clients one-on-one, and shape her creative evolution. “The Madison boutique gave me a new perspective,” she said, prompting seasonal category expansions.

The result is a

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