If you want new skins/models/clothing for your malk, you need to download a skin mod. You can find a list of links to other sites @ http://forumplanet.gamespy.com/bloodlines_modding/b50392/19619933/p1/
If you have fun with clothing in Bloodlines, you should take a look at Oblivion.
Light Leather - From Slater (in Red Spot) in Hollywood district.
Heavy Leather - From Tseng in Chinatown.
Body Armor - Looks the same as Heavy Leather but is the best in the game. You have to sacrifice your ghoul thought (she gives you this but after she dies) althought there are some ways around getting her killed.