you're not sounding like you even ready for a "hook up close"...but.
go up to her and say(playfuly of cours)"NO WAY!i almost wore that EXECTLY same dress!(look at the dress,and look surprised)ho wait...this one's blue,i have purple one!
what a relief...talking about akwared..."
then just go with it,you're on your own.
option two:if she is sitting somewhere,go up to her and say"i'm so sorry! there was traffic,and everybodey got stuck,my car is shit...ho,and i admit,i didn't knew which shoes to wear

"
she:wtf?
you:wait,what? aren't you (some weird hottie nickname like:sexyfox 69)? ho! i'm so sorry...you look just like the pics she send me...fuck! talking about akwared moment's hah? so what's you name?"
just roll with it...
good luck.

_________________
"Hank Moody: I love women, I have all of their albums."
"Vi Veri Veniversum Vivus Vici."
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is-too-much-trust-bad-ie-she-thinks-ill-vt123851.html