Yeah ITA! I can't imagine how a first would look weird on anybody, regardless of your size. The first is my favorite bag and definitely most comfortable for me size-wise. But I'm like 5'3/105 lb. Anything bigger than a first feels like a "big bag" for me. But anyway I think firsts look great on everyone. If you like the size of it then don't worry. It'll look good!IMHO, these bags are so beautiful, they all look great on women!
Another glamazon here...I'm 5'9 and a topheavy size 14-16 too.