How to use:
Extract the Nude_Alice.zip to 'America McGee's Alice' game directory. For example "C:\EA Games\America Mc Gee's Alice\.." There you'll see 2 .pk3 files: z(alice)black & z(alice)pink. Those are the topless skins. Simply move either ONE .pk3 file into the Base folder there. To switch skins you can swap files by moving them in and out of the Base folder. To return Alice to the original, move both .pk3 files out of the Base folder. You must start a new game to have z(Alice)black.pk3 to work because of its modified model.