Funny Sibling T Shirt Back Off I Have A Big Sister And I'm Not Afraid To Use Her   Sibling rivalry? What sibling rivalry? With this hilarious "Back Off, I Have a Big Sister" tee, you can proudly declare your allegiance to the big sis who's always got your back. Crafted from a soft, breathable cotton blend, this casual, comfy shirt is the perfect way to show the world you're not afraid to let your crazy sister loose on anyone who tries to mess with you. Whether you're shopping for the perfect gift for your bro or just want to add a touch of family humour to your wardrobe, this novelty t-shirt is sure to get a laugh. Available in a range of sizes from small to 6XL, it's the ideal way to celebrate your unbreakable sibling bond. So go ahead, flaunt your fearless family ties—your big sis will be proud. To Fit Chest (inches) Small 36-38" Medium 40" Large 42" X-Large 44" XX-Large 46-48" 3XL 50-52" 4XL 54-56" 5XL 58-60" 6XL 62-64"