Long Beaded Sherri Hill Prom Dresses with Train Stunning Strapless Blue Sale?

I found a Sherri Hill prom dress that I really like its: 
Sherri Hill  0629. 
It looks a little short, meaning I don't know if I should get it because I don't know if it will look "bad". I am 5'7 and have really long legs...if you have had this dress or tried it on,,can anyone tell me if it was to short?

I think it'll be hard to find someone who had that dress or tried it on because it is pretty pricey for a Long Beaded High Top Homecoming Dress with Train Stunning Strapless Blue On Sale. Sorry, I've never tried it on or had it. But.. 

I think it looks a bit short, but it'll seem ok if you have long legs, but the shortness is emphasized by your height. Some people will understand that it's hard to find a knee-length dress for tall girls. But if you are planning to wear it to prom, I can understand if people will think you look "bad" or maybe too flashy because there are pretty bright colors. Most people would go with a more classic look because it is a formal gathering. 
My friend actually wore this dress! It's really cute, but personally I thought it was a little short for prom. If you do like shorter dresses for prom, I try for at least mid-thigh. Personally, I don't like shorter dresses because most girls will go for longer dresses... thereby emphasizing how short yours is. And especially since you have really long legs, a "longer-short" dress shouldn't be a problem. Else than Sherri Hill (who has a LOT of short dresses), a couple good places/brands to look at are Jessica McClintock, cbslimited.com, Jovani, Terani, etc. Hope this helps!