Ladies Rosie Arch Madness ShirtsRelaxed fit Black: 4. 2 ounce, 100% Airlume combed and ring spun cotton Dark Grey: 4. 2oz, 50 50 Cotton Poly Blend 6400 Size Chart Model is 5'8, 145lbs wears Medium. S M L XL 2XL 3XL Size 2 4 6 8 8 10 10 14 14 18 18 20 Bust 30 32 32 33 1 2 33 1 2 35 1 2 35 1 2 37 1 2 37 1 2 39 1 2 39 1 2 41 1 2 How To Measure Measure under the arm and around the fullest part of the chest with arms down, keeping tape horizontal. Care Instructions Machine wash cold,