= Need help finding reliable plus size women's clothing stores in Italy, near Lucca/Florence. HELP! =

My partner and I are travelling through Italy for the next two months. After that we're moving Eastward. My partner only has about 2 fair outfits and they aren't ideal for working, or doing anything besides lounging or the light excursion. We had wine yesterday and now one of her shirts is stained too :( We're having a pretty rough time finding plus size clothes that are for women under the age of even 40. Mind you she's 21 and I'm 22. We've used Google, checked H&M, and all of the other main line stores that don't cost a fortune.. and the pickings are unusable for daily life, or they are attrocious. Is there a secret someone could let us in on? Any help is appreciated,