Decorative white table with a round white vase, stacked beige stones on top of books titled 'Crystal Healing' and 'The Art of Home,' against a white paneled wall with a framed landscape painting.

The Studio

Saint Louise Design is a full-service interior design firm based in Austin, Texas. Led by sisters Stephanie and Melanie, we specialize in whole home furnishings, renovations and new construction.


Two women standing close together, one with arm crossed, both smiling, against a beige background. One woman has wavy brown hair, wearing a teal cardigan and checkered pants. The other with long blonde hair, wearing a wide-brimmed hat, beige cardigan, and cream dress.

The Founders

STEPHANIE BROWN & MELANIE ARGUELLO

Stephanie's love for interiors began early, but her journey to becoming a designer wasn’t straightforward. After a successful career in floral design, which earned her recognition from bridal publications like Martha Stewart Weddings, she discovered her passion for creating beautiful, livable spaces while renovating her own home. This experience, combined with her natural ability to capture emotion through design, led her to form Saint Louise Design.

Melanie’s path to interior design was shaped by her extensive experience in commercial real estate and her love for entrepreneurship. With a background in luxury merchandising and property development, she developed an eye for crafting spaces that reflect not just beauty, but function. After moving to Austin and partnering with Stephanie, their combined skills created the perfect dynamic—bringing their vision of effortless, high-end design to life.

Together, as sisters and co-founders, Stephanie and Melanie share a passion for turning houses into homes that feel uniquely tailored to the lives of their clients.


A vintage black and white portrait of a young woman with vintage hairstyle, wearing a dark dress with a white collar and a pearl necklace, posing with her head resting on her hand against a dark, textured background.

The Name

Saint Louise Design is a nod to our birth city - St. Louis - and to our Great Grandmother Louise whose name represents family, strength, and legacy. Together, this name unifies us as sisters and celebrates the connection we bring to every home we design.

It’s more than just a name - it’s a reflection of our roots, partnership, and the magical spaces we create for families to live, love, and grow.