When life is busy, a matching set is the shortcut to looking polished with zero stress. Amazon’s got ribbed knits, satin stunners, and tailored sweats that say “put-together” before coffee. Why They Work Built-in polish: Top + bottom = instant outfit. Flattering fits: Fabrics that skim, not squeeze. More mileage: Wear together or mix with jeans, skirts, blazers. Travel/everyday friendly:…