Hair will need some scaling, positioning and so on to fit but if it's one of Ali's hair figures, there are usually fit morphs provided.  

I've never found it a problem to fit hair to other figures, even without morphs provided for the job.  That includes ones from way back, such as Quarker's Grace Lion and similar.

Clothes wise, I don't know; I know there are various fitting options available in Poser but I've never used them, other than the old WW.

Coppula eam se non posit acceptera jocularum.

My Store

My Gallery