About
Malgosia

Malgosia Migdal was born and raised in the town of Gdansk, Poland, on the coast of the Baltic Sea. From an early age she enjoyed making her surroundings warm and inviting, and was naturally drawn to the dynamics of interior design. One of her mother's closest friends was in the design business and Malgosia fondly remembers listening to tales of the latest design trends - all the while wanting to be a part of this exciting world.

Malgosia is an avid traveler, having visited over 50 countries. Each trip that she takes usually ties in to an upcoming project or the need for additional research on a specific era or style. Travel also allows Malgosia to step outside the box and view the entire interior design industry as a bigger entity. She attributes her rich understanding of culture and design to her many travels and upbringing in Europe.

Malgosia is able to meld old and new in any setting, giving even the smallest space a personalized sense of beauty.

Highly recognized as one of the top national design firms for over 25 years, Malgosia Migdal Design established its headquarters in the famed Golden Triangle of Beverly Hills. With a second office in the iconic beach city of Malibu, MMD remains one of the few ultra high-end interior design and architecture firms resonating from the heart of Southern California.

With extensive experience spanning residential and commercial design, inspiring design-build projects, and elegant staging techniques, this renowned boutique firm prides itself on honoring its modern European influence where minimalism meets functionality. With a distinct aesthetic marked by a cool coquettish edge fused with warm natural elements, Malgosia Migdal Design showcases their talent by melding simple yet bold accents with mindful detail that create an unprecedented chic environment.

Aside from the alluring design aesthetic, the aptitude to urate unique pieces from across the globe, and the artistic talent to methodically bring architectural detail to custom designs, MMD has earned its reputation by offering diverse and unique solutions to some of the most challenging spaces. This exceptional and intuitive ability to create a balances environment with an emphasis on holistic interior design is what gives MMD an incomparable magnetism and sophistication that sets them apart.

The Team

Briana
Simonelli

Briana Simonelli discovered her passion of interior design at a young age while visiting with her father on one of his residential construction projects. Her excitement for architecture and design grew in appreciation during her first European tour which later led her to study at Scottsdale Community College and completing her AAS of Interior Design degree. During her studies she gained real-world experience working directly with an interior designer on private residential projects and further enhanced her experience while working in retail showroom with design services.

Upon completion of her degree, Briana moved to Los Angeles to launch her career in California. Briana's inspiration is largely influenced by renowned Scandinavian designer Hans Wegner and Italian architect and designer Mario Bellini. Her passion for design continues to evolve as her career grows with Malgosia Migdal Design.

Katherine
Dragon

From a young age, growing up in Santa Barbara, Katherine was drawn to beautiful interiors and the stories they tell. Having lived in Paris, along the West Coast, and in the South, she brings a layered perspective shaped by places celebrated for their culture, craftsmanship, and architectural heritage. Her design sensibility balances traditional elegance with contemporary artistry, drawing inspiration from the enduring beauty and proportion of Ancient Greek and Roman architecture while reinterpreting classical principles through a sophisticated, modern lens.

Katherine received her bachelor’s degree in International Relations from the University of Southern California (USC) and completed her postgraduate certification in Interior Design & Architecture at the University of California, Los Angeles (UCLA). She continues to expand her expertise at Malgosia Migdal Design, contributing to custom luxury residences and large-scale developments and bringing a thoughtful, refined approach to each project from concept through execution.

Mackenzie
Guardado

Mackenzie earned her Bachelor of Arts degree from Interior Designers Institute in Newport Beach, California, where she fostered a strong foundation in design and interior architecture. Amidst her studies, she began working on residential projects in Orange County and abroad, gaining hands-on experience that deepened her appreciation for creating spaces that blend beauty with functionality.

At Malgosia Migdal Design, Mackenzie brings a fresh, creative perspective and a growing appreciation for clean lines, organic textures, and timeless forms. Inspired by travel, art, and the natural world, she’s passionate about creating intentional spaces and continues to evolve her design eye through collaboration, curiosity, and exploration.

About