Kacey Musgraves at the 2026 ACM Awards in Las Vegas.Christopher Polk/Dick Clark Productions/Getty ImagesKacey Musgraves has evolved her style from Western casual to designer chic.She once wore a mix of colorful jeans, classic cowboy boots, and patriotic tops.Her current wardrobe features more feathered hats, crystal-covered pieces, and evening gowns.Kacey Musgraves famously sings about being "all right with a slow burn" life on her 2018 album "G…