Special dresspheres - How to Equip Them?

I've played 50 % of the game, and I'm in Chapter 3. I've received the three special dresspheres (Floral Fallal, Machina Maw and Full Throttle), but I don't know how to equip them.
None of the Garment Grids list them as an alternative when I want to equip dressphere's - not even Unerring Path! I've tried looking at gamefaqs too, but I can't find any advise.

Can anyone here help me?


Oh, I just found out. Equip all dresspheres in one GG in one battle and then press L1. I'm off to try it out now. Sorry!