VTG Gunne Sax Women Girl XXS, XS Dress, Punk Grunge 1980s Black Pink Lace Dress

This is a vintage piece and tag says size 8. Not sure how their sizing is because its such a vintage piece and times have changed. I feel like this is could be anywhere from a XXS, sixe 0 or XS in womens, please see pic for waist measurements and i will list measurements here also. When laying flat armpit to armpit measures 15” across making the bust 30” The total lengh of this dress is 36” Please ask any questions you may have.