Are Equipment Set Effects stackable?

I've no idea about this so I would like to ask if the effects are stackable.



What I mean is if I wear 6 equipment of the same set, will I get a total of 4 Set Effect + 5 Set Effect + 6 Set Effect?

Sorry for asking because the website states that the effects are stackable. =x

5. There are equipment set effects when equipping 4, 5 and 6 pieces of equipments together. Effects are stackable.

Does the set effects of Empress’s Fine Set/Empress’s Brilliant Set stacks too?

Source: http://maple.asiasoftsea.com/

The Fine set and Brilliant set would not stack, because you can't wear all the components of both of them at the same time.
The effects within the individual sets would stack, however.

The Fine set and Brilliant set would not stack, because you can't wear all the components of both of them at the same time.
The effects within the individual sets would stack, however.

Opps, sorry for phrasing the question wrongly. Thanks for the answer regarding individual sets!