If You are not familiar with Tommy Bahama sizes on their Women’s clothing lines is that they tend be one size larger than they have noted on their tags. 

My sister at 5’ 7” and 125 lbs. with a very athletic body would normally wear small-medium size. She bought this one and it would fit her perfectly.

Embrace the island life in this Tommy Bahama Ashby Rib 3/4 Sleeve T-Shirt in White. This Ashby Rib 3/4 Sleeve T-Shirt by Tommy Bahama features 26" shoulder to hem (based on this size s), scoop neckline, shirttail hem and ¾-length sleeves. This Tommy Bahama Ashby Rib 3/4 Sleeve T-Shirt is made by 100% Cotton.