Venus Midi Dress with tulle slip

Ok so this tag does say XS but this dress is NOT. I go this dress and had to take it up and in ( hem work pictured) waist is extremely stretchy I have worn it with a 30-31” waist and pictured in 27” waist. Built in slip with tulle trim to give it some suush. Measures 24” in length from waist. Measure 36 1/4 in length total