Being short and slim, my standard sizing for shirts is S-Slim Fit. This T-Shirt is sligthly wider and longer than other brands I've bought. Maybe that's why they also offer the XS option (equivalent to Asian S). However, it's not so much bigger and doesn't look baggy on me, so I'll keep wearing it and will try the XS next time. The colors of the two shirts I bought (butter and maroon) were accurate.