Unfortunately, the answer is "it depends on the outfit." ZY did a set of female suits a while ago which were nicely tailored and were generally pretty good, but they were cut rather small and were really only suitable for some female jointed bodies at the time. The shot below shows the ZY suits on a Kumik-style knockoff body (left), a Verycool jointed body (center), compared with a POP Toys suit on their body (right).
These Women Mean Business by Ed's Toy Box, on Flickr
However, that same suit is way too small for a Phicen large bust body (or at least the shirt is):
All Business by Ed's Toy Box, on Flickr
However, ZY has also done some other sets where the marketing photos put them on a Phicen/TBLeague (mostly stuff like their lingerie or other outfits in that vein). The closest I have is a nurse's outfit that fit pretty well on an S17B Phicen/TBLeague body but I probably wouldn't risk putting it on anything bigger:
Hello Nurse by Ed's Toy Box, on Flickr
(And for the record, it's just the dress and hat that are ZY Toys. The stockings on that figure are by HotPlus.)
I think the rule of thumb would be that full clothing sets are for jointed bodies like the Verycool body (or the ones that you can find branded ZY Toys), while skimpier stuff can fit on some kind of Phicen/TBLeague body (though which one is a crapshoot since there are many different body types now and more coming).