ALAIA Sleeveless Skater Dress Fit and Flare Black White Back Zipper Size 6?

This pretty ALAIA fit and flare dress is in very nice pre-owned condition!  However, material and size tags are missing.  It is a very heavy knit. Please consider the following measurements before purchasing.  Thank you!   Measurements (taken while laying flat):   Bust (armpit to armpit) - 14.5" Waist (side to side) - 13" Length (top of shoulder to end of hem) - 35"