With less than a week until X-Men: First Class opens in the U.S. on June 3, 2011, is this publicity for the movie in the skies of the City of Angels?
Giant 'X' symbols in the California sky seems like a great publicity stunt for the film starring Professor Xavier's uncanny band of mutant heroes.
The last time I saw sky writing like this was as a tribute with a giant heart for Michael Jackson the day they buried him in L.A.
Whatever the reason for these giant X's, they still look pretty cool to behold...
UPDATED: Yesterday's initial sightings have intensified tenfold today on Memorial Day, so here's a short video of one uncanny X being formed.