Rainbow Dash and Applejack fursuits at the MLP Brony panel at Anthrocon 2011. The whole con is 20% cooler!

These suits are by Sophie Cabra: http://www.furaffinity.net/user/sophiecabra/

Edit: I added another video of these two goofing off the night before. https://www.youtube.com/watch?v=_EOKYR6GzCI