Server-side validation should only check what items you have

[itsrachelfish]

The server-side validation should only check what items you have, to prevent you from equipping something not in your inventory. It should not prevent you from stacking multiple items ontop of eachother or creating a ghost avatar, because that shit is funny.

The client-side validation should handle all of the basic logic for what should be equipped / not stacked ontop of eachother, allowing cool hackers 😎 to bypass the restrictions.

[itsrachelfish]

However I do think the server-side validation should enforce at least ONE item being equipped. If you try to create a completely blank avatar, the server will force you to be a pair of floating socks.