It is approximately a size 8 size tag is missing

Measuring flat:

19" armpit to armpit

18.5" bust

16.5" waist 

19.5" hips a little lower 20.5" 

24" waist down length

Knee length

Silk/organza/tulle/sequin teal blue and black

Side zipper

Smoke free

Previous Alterations done to this dress not known.

Smoke free