This is the Imperial Star Destroyer shaped cloud spotted by Redditor EltaninAntenna hovering over Helsinki, Finland. Allegedly it's real, so unless Daisy rises from the grave and argues otherwise in the comments, we'll all have to assume it hasn't been Photoshopped. Or nobody will assume that but me, and I'll wind up looking like a jackass the same way I did when I tried to tell everyone at the bar that beer comes from wolves because that's what a friend told me. Turns out he lied. Thankfully they were kind enough to set me straight. It comes from bees, that's why it's called beer.
Thanks to ChaosLex, who allegedly spotted an X-wing cloud once but conveniently didn't have his camera on him. Likely story.