We have a wedding to go to the weekend of thanksgiving, and ive been trying to get inspired on dress shopping because im tall and plus size so clothes shopping in general is never easy. my other problem is i love dressing up. so im afraid ill go over the top. i dont want to show up looking more dressy then the wedding party

So i found this dress.....
http://www.maurices.com/product/index.jsp?productId=12685239which i think is cute and probably appropraite as far as dressy-ness, and i would probably wear black boots with it. but i haven't tried it on yet and the way it sinches in below the bust, sometimes that style makes me look like im expecting and since im not, thats not the look im going for.....
so along the lines of the above dress can anyone suggest other dresses or other places to look....