I Have A Secret I'm Going To Be A Big Sister T-Shirt Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 50% Cotton, 50% Polyester Imported Machine wash cold with like colors, dry low heat Unique, great looking I Have A Secret I'm Going To Be A Big Sister Shirt. These I Have A Secret I'm Going To Be A Big Sister T Shirts features a nice design with the same quote on front and back, creating a suspense. Available for Men, Women & Kids. Order your Big Sister Shirt. Lightweight, Classic fit, Double-needle sleeve and bottom hem