Bridesmaid Dress Help

Okay so we are having a casual Sunday afternoon wedding. Our whole theme is relaxed and fun. I don't want to get a typical bm dress so I went to Bloomingdales, Nordstroms and Saks just looking for something cute and fun that they can buy off the rack and hopefully wear again. I didn't come up with ANYTHING. Any other suggestions as to where else I can look, or have any of you have been to really great places with a big bm dress selection??

Thanks!