Who could forget Jennifer Aniston's red Prada in 2000? Or Blake Lively's plunging Versace neckline in 2009? We certainly couldn't. Take a look back at who's had us oohing and aahing as we get ready for this year's red carpet moments, and let us know which one you would choose if you were making an entrance at the Emmys. On Allison McNamara: Maggy London dress.