Go up to your target…

You: “hey I’m finally here! Traffic was horrendous! And I admit, it took me some time to decide on what shoes to wear.”

Her: Puzzled look on her face

You: “wait…you’re not BUBBLES6969? The pic she sent me looks EXACTLY like you!”

Her: “blah blah” (hopefully a laughter and smile if delivered right)

You: “wow… talk about embarrassing moments, huh?”

Of course you aren’t embarrassed and you can just stack forward from there appearing unphased by the “embarrassing moment”