Costumes have been revealed for the first 2 costume DLC packs. These ones are actually pretty cool, wait till you see the "Retro" dlc! Honestly i think the DLC looks awesome, better then the crap RE5 dlc. Its cool because the Retro outfits. I can care less about the Parody Outfits unless they bring some RE Outbreak characters as parodys too.
Parody Costume Pack:
Piers Costume- "Chuck Greene- Dead Rising 2"
Jake Costume: "Rapper"
Ada Costume: "Fong Ling- RE: Dead Aim"
Sherry Costume: "Sherry Nostalgic- RE:2"
Retro Costume Pack:
Chris Costume: "Chris Resident Evil 1- RE:1 PS1"
Piers Costume: "Piers 2D"
Leon Costume: "Leon RPD- RE2"
More can be found here: http://helldescent.com/forums/showthread.php?tid=1457