From You Are Not Alone, it is a size Medium.

92% nylon and 8% spandex, it has a nice slight stretch to it.

Soft and silky fabric that has a sheer crochet/lace look to it.

Scalloped hem and cuffs add a nice look!

Measures 

17" underarm to underarm

27" back of neck to hem

24.5" shoulder to wrist

From a non-smoking home.