Love letters? For me? Goodness, I'm flattered... This special button up features HEART SHAPED buttons!! The fabric is 100% COTTON. Please check the last two images for sizing. There is one size chart for inches and one size chart for centimeters. The chest measurement is around the chest at the widest point. The modeled photos show a size small shirt on a 5'5" body. Color of the actual product may vary slightly from it how looks on-screen. Please note that apparel items cannot be returned or exchanged. HOW TO MEASURE: The size chart reflects the garment measurements, NOT your body measurements. The most accurate way to find your size is to measure an existing shirt that fits you well (lay it flat and multiply the chest width by 2 to compare it to this size chart). If you have your body measurements only, you will need to add a few inches/cm to account for flexibility and movement!