The 5 biggest interior design trends you’re about to see everywhere in 2026 👀✨�Bookmark this one now. Grandma core is officially cool again — and no, not the dated kind. Think Kendall Jenner’s mountain house energy: layered patterns, rich colors, vintage vibes, and a home that looks collected over time, not copy pasted. 3D wall art is having a major moment. Plate walls were just the beginning… expect to see tapestries, framed textiles, and even rugs used as wall decor to add depth and texture.