you miss to read the doc\item_db.txt
it will resolve all your question regarding on the costume page.
Loc: Equipment's placement. Values are:
2^10 1024 = Costume Top Headgear
2^11 2048 = Costume Mid Headgear
2^12 4096 = Costume Low Headgear
2^13 8192 = Costume Garment/Robe
sample
Costume Low Headgear
ID,AegisName,Name,5,0,,0,,0,,0,0xFFFFFFFF,7,2,4096,,0,0,View,{},{},{}