Following the giant planetarium installation at Chanel's Spring-Summer 2026 fashion show, where the Grand Palais' glass canopy was transformed into a lunar landscape, the tone has been set: the cosmos is no longer content to simply inspire runways—it's now making its way into our living rooms. Moon lamps, cloud ceiling fixtures, solar and starry mirrors are no longer reserved for children's bedrooms; they're becoming centerpiece elements of celestial decoration designed specifically for adults.
Endorsed by lifestyle queen Martha Stewart and designated as a flagship trend for 2026 by British magazine Homes & Gardens, the celestial style responds to a desire for gentleness, poetry, and a slower pace of life. Balancing dreamlike galaxies with intimate cocoon-like spaces, this trend promises interiors that breathe serenity rather than spectacle. The key question remains: how to bring this interior sky into your home without getting lost among the stars.
The celestial style emerged as a major force following Chanel's October Spring-Summer 2026 show, which featured a monumental cosmic set beneath the Grand Palais' glass roof. The installation included lunar landscapes, the Milky Way, and luminous spheres evoking stars and planets, establishing the foundation for a powerful stellar aesthetic. This scenography marked the fashion house's entry into a new era and, in its wake, propelled the trend as the major decorating movement of 2026.
In home interiors, this movement extends far beyond a few sparkling trinkets or galaxy wallpaper on a single wall. It translates into an immersive, gentle, and luminous staging designed to create an enveloping, almost meditative atmosphere. Modular and adaptable, the celestial style works equally well in contemporary living rooms and minimalist bedrooms, cultivating visual depth, cosmic nuances, and a genuine connection to one's inner self.
At the heart of this design philosophy lies a shifting palette, like a sky that changes throughout the day. Deep night blues glide into cosmic violets and lavenders, lunar grays blend with silvery clouds, while nebulous pastels, pearlescent stellar beiges, and iridescent milky whites envelop rooms in an almost fairy-like aura. The celestial color—a pale sky blue derived from the Latin "coelestis"—symbolizes purity, lightness, peace, and relaxation, making it a particularly valuable ally for both living spaces and bedrooms.
To master these tones without overdoing it, the ideal approach is to combine them through small, well-targeted touches. In the living room, a midnight blue wall, sky blue sofa, and a few lavender cushions highlighted with pale gold evoke a twilight sky. In the bedroom, milky white walls, powder blue bedding, and a stellar beige rug create a soothing cocoon. In the bathroom, a blend of lunar grays, pearlescent tiles, and brushed silver metal recalls moonlight's gentle glow.
Lighting remains the true energy source of the celestial style in everyday settings. Indirect and diffused light sources sculpt space rather than overwhelming it: LED strips tucked behind headboards or in cornices, wall sconces creating halos with frosted glass or perforated metal, planetary or elliptical fixtures in opalin glass, fabric, or paper for subdued lighting. Delicate string lights placed on shelves and uplighter floor lamps projecting beams toward the ceiling complete this weightless luminous landscape.
To ensure this cosmic ambiance promotes well-being, air quality must be as carefully considered as light reflections. Lesser-known air-purifying plants perfectly complement this gentle scenography: Boston ferns, champions at absorbing moisture and persistent odors, find their place near bathtubs; spider plants filter cooking emissions in kitchens; pileas add a design note while discreetly purifying bedroom air. English ivy, calathea, and ZZ plants—all highly tolerant and easy to care for—complete the decor in entryways, living rooms, or offices, creating a natural barrier against bad odors and domestic pollutants for a truly celestial daily sanctuary.
