Bohemian off shoulder dress

I am in the entertainment industry (singer) and I do a lot of photo shoots and wear a lot of fashionable clothes as part of my career. Much of the stuff that I am selling is stuff that has been worn a few times and it's time to "Out with the old and in with the new". The tag sizes vary between brands but I am a size 18/20 in women and all of these clothes that I am selling fit an 18/20 so I am listening as such for accuracy.