Wedding dress 15 months early...

So I was running around this weekend trying on a bunch of dresses to try and find the right style to me. I went with my sister and nieces and my best friend. I tried on every style each boutique had and I hated something about how every single one fit. The fabric was so stiff and the beading was too much and the lace reminded me of my grandmas linens and I was just super unhappy... Then I went to this rinky dink place up north where they only had 8 wedding dresses (they mostly had quince dresses and first communion attire). I tried on the two in my size, one was super prom-y... The second one I loved the moment I put it on. It has a very Grecian/Roman goddess feel and the sleeves were exactly how I imagined I'd like them. I walked away without it, went to three different stores to try to find a dress in the same style with absolutely no luck. I tossed and turned all night until finally this afternoon I went back and bought it... 15 months before my wedding.. Too premature?