I wear a size 12 on top and an eight on the bottom it fits me but fits too tight so if you wear a 12 I would not purchase this. it's a 10 and it's a true 10. the bottom doesn't matter because it's a wrap dress that you can adjust as you can see it's been worn by Kelly Clarkson on her show, on Bold and the Beautiful by hope twice, by Carly on General Hospital and by Chloe on Days of Our Lives. I love the dress but unless I lose weight it doesn't fit.