In the annals of design history, husband-and-wife collaborators are not uncommon, but a mother-and-son team is rare indeed. Kathleen and Tommy Clements have built their powerhouse interior-design firm by crafting richly layered, finely curated, and eminently livable homes for many of the brightest luminaries in the notoriously fickle world of entertainment.

Their star-studded client list includes Ellen DeGeneres and Portia de Rossi; Bruno Mars; Jennifer Lawrence; Adam Levine and Behati Prinsloo; Scooter and Yael Braun; and Kris Jenner. Whether they’re working on a neo-Palladian villa or a sleek, modern mansion, the Clementses apply the same straightforward, unpretentious design philosophy: “Don’t overthink it.”