An excellent question. On one hand, it may be a simple matter to connect the similar, if much younger face, the accent, and hey the last name would be a pretty big giveaway. And it would be a standard reaction to be totally hella wigged out by it.

But then, this is Ginger we're talking about. Everything's just a funny silly coincidence! How weirded out would Gary be if and when she inevitably starts talking about her snowbeau named Clayton who Gary "reminds her of oh so much!"