u should wear the dress she wore to her prom
http://www.asos.com/Sienna-Miller/Asos/Premium-Silk-Full-Skirted-Halter-Dress/Prod/pgeproduct.aspx?iid=247952&cid=4168&clr=Blue&sh=0
http://www.target.com/gp/detail.html/180-0746033-9233245?asin=B001D4X9Y6&AFID=Yahoo&LNM=B001D4X9Y6|Jrs_Xhil_Asymtrcl_Trd_Hltr_Drs-Aths_Blue&ref=tgt_adv_XPYD0100
http://www.debenhams.com/webapp/wcs/stores/servlet/product_10001_10001_66853_690135_-1
http://www1.macys.com/catalog/product/index.ognc?ID=331699&CategoryID=26682
http://www1.macys.com/catalog/product/index.ognc?ID=352615&CategoryID=37784
http://store.delias.com/item.do?itemID=51096&categoryID=1660&sizeFilter=&colorFilter=&brandFilter=
http://www.urbanoutfitters.com/urban/catalog/productdetail.jsp?itemdescription=true&itemCount=60&startValue=1&selectedProductColor=blue&sortby=&id=15634652&parentid=W_APP_DRESSES&sortProperties=+product.marketingPriority,-product.startDate&navCount=24&navAction=poppushpush&color=&pushId=W_APP_DRESSES&popId=WOMENS_APPAREL&prepushId=
just wear something like those and and black short-top converse, and if u wanna go all out get a boot like u have a broken leg
hope this helps and i love twilight!!