Mannequin was it Simon Doonan's inspiration?

I just re-watched a childhood favourite 'Mannequin', and it suddenly dawned on me the amazing Visual Merchandiser aka 'Hollywood' creates awe inspiring windows for the store Fritz and Company. Is this where Simon Doonan (creative genius at Barney's) first got his taste for great windows?

So many things to love about this film- Kim Cattrall's clothes, Andrew McCarthy being adorable and naive ahh the list goes on!