I am 50yo, and I am AUS size 16-18 in shirts, so I bought this shirt in size XL. I love that the arm (bicep area) width is for women needing a bit more room/space. The fabric is high-end rayon with a silk feel. I live in Broome and the fabric is perfect for tropical climates as it's quick drying and lightweight. I'm going to purchase another shirt in a different colour today from Azure, as they take up very little space in luggage and it'll be perfect for my trip to Singapore. P.S. Fabulous customer service at Azure too.