Bridesmaids Floral Robes - yay or nay?

I was wondering if anyone had experience with getting or giving cotton bridesmaid robes for the morning of the wedding for everyone to get ready in. I have always loved the look of it, but I worry that a) they won't be comfortable (because most are one size fits all and not soft cotton) or b) they'll just dislike them completely. Has anyone given these as gifts? If so where did you buy them from? TIA!