just don't give smiles don't give smiles. don't say none of that weird shit ppl say.
if you are not same ethnicity/look same, give up. buy of you visibly both look similar. u most likely got it, just say. "hey its u again!" and then "is it fine if we talk?" or similar.

the rest is up to you.

idc if she had X on her bag/shirt etc. don't have that in your openerk. just have that be after you got a convo. worse shit i have had was whores say "i like ur shirt" abd i just keep walking and say thanks