I have always purchased size women's medium from Blue Chip, and have never had any size issues. I am 5'2 and 125 lbs., and I can usually wear small but I like my shirts to be a little loose. I have gotten so comfortable with all of my purchases from Blue Chip I don't even try shirts on before washing (big mistake this time). Needless to say this shirt runs very small. So order up in size.
I do love the image, style and color of shirt. So I might just order another one but this time it will be a LARGE!