This Liz Claiborne dress is gently used.  It a great combination of features that give it it's style. 
Measures 37" from neck seam to bottom.
From underarm to underarm is 19".
The mock neck is 2".
The back zipper measures 15" from top of mock neck.  The zipper is one of those "hidden" zippers and you have to watch zipping it up and down so you don't snag it.