Celebrate your 21st birthday in style with this vibrant high-resolution 21st Birthday SVG cut file featuring a bold rainbow design. This digital download is perfect for crafting custom 21st birthday shirts, personalized wine tumblers, milestone birthday cake toppers, banners, greeting cards, printable party invitations, and unique handmade birthday gifts. Whether you’re celebrating your own birthday or creating something special for a friend or client, this twenty-first birthday SVG works seamlessly with Cricut, Silhouette, Brother ScanNCut, laser cutters, and other cutting machines. Use it for heat transfer vinyl projects, iron-on transfers, sublimation printing, sticker designs, and print-and-cut birthday paper crafts. Perfect for adult birthday DIY projects, 21st birthday party decorations, milestone celebration keepsakes, or even sorority and college birthday events. The included high-quality PNG files (300 DPI, 12 x 12 inches) make it easy to use on printable birthday cards, scrapbooking pages, or digital designs. Make custom t-shirts, birthday mugs, tote bags, glassware, keychains, or acrylic sign toppers with this fun and festive twenty-first birthday rainbow design. It’s ideal for keywords like 21st birthday shirt SVG, birthday SVG for Cricut, rainbow milestone birthday design, adult birthday digital file, birthday party decor SVG, personalized 21st birthday gift idea, legal drinking age birthday SVG, turning 21 shirt design, DIY birthday cut file, rainbow 21st SVG, or twenty-first birthday party crafts. Whether you're crafting for your own big day or making something meaningful for someone turning 21, this colorful SVG brings creative possibilities to life.