This is funny because Catwoman's outfit has a similar zipper (with the giant ring zipper) and Adam Hughes had drawn Catwoman with her zipper unzipped.
Of course, that wasn't as bad as the art in the OP for various reasons:
1) The Catwoman art was actually drawn well
2) It was a pinup, while the the Black Canary is in action in the OP

Speaking of the giant ring zipper, wouldn't that easily get pulled down "accidentally" during a fight?

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