A two for one in
Justice League Adventures #6, an issue of the series
Justice League Adventures (Volume 1).
Readcomics link for the curious, so don't forget the addblocker.
https://readcomiconline.li/Comic/Justic ... 6?id=39911
The plot is that some villain with time power captured Superman, Batman, and Wonder Woman, and is hosting an auction sale in which he invited a lot of DC Comics villains - including a good chunk of Batman's rogue gallery.
However, among the assembled bad guys, there are a few members of the Justice League in disguise. They take advantage of the in-fighting between the villains to capture them under the guise of "taking out the competition for the auction". As you can guess, the tone of the story is slightly humorous. Most of the heroes undercover are dudes, but there is also Hawkgirl who is impersonating Roxy Rockett. Thus, she is wearing Roxy's garb. Sadly, we never learn what happened to the real Roxy Rockett. It's never revealed if Hawkgirl mugged the real Roxy beforehand for her outfit, or if the League just crafted a spare set of clothes, or even if they captured the real Roxy Rockett off-screen.
There is a twist at the end (so minor spoiler if you want to read the issue blind). It's revealed that the "captured" Superman, Wonder Woman, and Batman are holograms. The whole auction was, in fact, a ploy of the Justice League to gather plenty of bad guys in one location and capture them all. "Chronos" is in truth Batman in disguise... and Catwoman was the whole time being impersonated by Wonder Woman. However, just like with Roxy, we never learn how Wonder Woman got the costume. For all we know, Selina could even be on the ploy, and willingly lent a costume of hers...
At one point, the issue shows the Justice League has been locking the baddies they captured in stasis cells, but we don't get to see if Roxy or Catwoman are inside some of those.