Shirt: size XL for an oversized fit. If I wanted the shirt to be fitted I’d wear a size small or medium. Sneakers: tts, I wear a size womens 9, and I ordered a womens 9 in these sneakers and they fit perfectly. Super light weight and comfy. Biker shorts: size 6, 6” inch Size reference: I’m 5’8” 28” waist and normally wear a size small/ medium LTKSeasonal LTKstyletip LTKunder50