Elementary School Graduation Dresses

I am in Grade 7 and graduated from elementary school (pretty lame, huh?). Anyway, our graduates. ceremonly is really formal, I want a pretty dress. Are there any good sites for this sort of thing?
(I want something strapless, around knee length, what websites / stores have things like that?)

http://www.forever21.com/product.asp?cat ... with http://www.forever21.com/product.asp?cat ...

http://www2.jcpenney.com/jcp/X6.aspx?Dep ...

http://www2.jcpenney.com/jcp/X6.aspx?Dep ...

http://www.dillards.com/webapp/wcs/store ...

http://www1.macys.com/catalog/product/in ...

http://www.debshops.com/Fashion/ViewDeta ...

http://shop.nordstrom.com/S/2978075/0 ~ 23 ...

http://shop.nordstrom.com/S/2970792/0 ~ 23 ...

http://shop.nordstrom.com/S/2972622/0 ~ 23 ...

yeah I know it's a lot, but you can just look through and see what you want me to just put all the knee-length strapless dresses that I could find it

Limited is too good!

Well, I'm in grade 7 too, and it sounds a little lame, but JCPenny has really cute dresses in the spring because after his ball. www.jcpenny.com

Deb is also good for dresses: www.debshops.com

Also Nordstroms and Neiman Marcus are still good

www.nordstroms.com

www.neimanmarcus.com

it has the CAP and dresses: http://www.saxonuniform.com/capandgown/k ...

cute dresses here (bra and knee high):
http://www.promgirl.com/shop/dress_by_ev ...
http://www.promgirl.com/shop/dresses/vie ...
http://www.promgirl.com/shop/dresses/vie ...
http://www.promgirl.com/shop/dresses/vie ...