General

Help equipping empress set so i currently have 3 pieces of the set and im trying to equip my overall and i am currently unable to for some reason my current overall gives +21 luk and my luk with all my equips including 3 empress is 209 so unless im missing something then if i unequip my overall i should have 188...still enough to equip empress overall right? but for some reason my other equips end up getting red and i cant equip the empress overall...is there something im missing? please any and all help is appreciated. Thanks, -Kumot