Rebecca Taylor tiered lace night out dress in a women's size 8.  A boho mix of floral prints defines this 70's-inspired statement dress, detailed with sheer lace strips and a fluttering, full tiered skirt. There are store markings on the interior neckline and tag. Retails for $695. 
 
Measurements are approx and taken with the dress laying flat.  Double where necessary.
Armpit to armpit:  17 1/2"
Waist:  31"
Hips:  46"
Length:  48"

Details from their website:
Hidden back-zip closure
High, halter-style neckline
Sleeveless
Lined
Hits at the mid-calf
100% cotton
Combo fabric 1: 52% silk, 48% cotton. Combo fabric 2: 100% silk
Lining: 100% viscose