Basically anything that looks like Lunar's clothing will work! I crafted Orchid dress for this event and added a few accessories--then viola! S rating. Other dresses that might work are Aster, Night of Shanghai, Kapok, Solitary return, Crane-epic, Flower in Mirror, Moon in water, Verdant Willow, Maple leaf ninja, and many more. If you're like me, you don't spend USD on the game and mostly go off of luck ^^ if you have little to none of these items, you could always go to achievement > gallery > 7 nations > Cloud to reference the style :) Hope this helps!