The Alice: Madness Returns is quite an enjoyable game, but what makes it even more so are all the unique dresses she can wear. There are 12 in all and when worn, they offer a different ability or perk. Here is a list of each dress, where to get it, and what the dress offers when worn.
The Siren dress. Enemies drop twice as many Roses. Dress available after Chapter 2. Perk available after game completion.
Hattress Dress. Lose teeth instead of Health dress. This is in the DLC pack, perk available immediately.
Skullduggery’s Game Review: http://pshomegazette.com/2011/06/15/alice-madness-returns/