Morgan Lily (2012) has been cast to play the younger version of Mystique in Matthew Vaughn's X-Men: First Class.  Unfortunately, SuperHeroHype doesn't have any more details on the role, but if I had to guess, I'd say that young Mystique appears in a flashback or in brief origin scene since most of the young mutants in the film are around the age of the older Mystique, who is being played by Jennifer Lawrence (Winter's Bone).  I think it would be interesting if they hadn't cast a blond white girl to play both the older and younger Mystique since the character's mutant power is shape-shifting.  If the actresses looked completely different, it would signal that the character's default appearance was always blue-skinned and red-haired.  Or perhaps the idea is that Mystique has no default appearance but prefers to look like a blond white girl.

As the start date for First Class rapidly approaches, you shouldn't be surprised to see at least one casting report for the movie per day.   Hit the jump to see the full cast list thus far along with the official synopsis.  X-Men: First Class is slated to open on June 3, 2011.

Here's how the casting currently stacks up:

And as for rumored casting:

The characters “Multiple Man” and “Willow” are also rumored to be in the film. If there are misdirects among the roles, I would believe these would fall into that category. It’s either that or (hopefully) they’re background characters like Kitty Pride/Shadowcat in the first two X-Men movies.

And here's the official plot synopsis:

X-MEN: FIRST CLASS, following the classic Marvel mythology, charts the epic beginning of the X-Men saga. Before Charles Xavier and Erik Lensherr took the names Professor X and Magneto, they were two young men discovering their powers for the first time. Before they were archenemies, they were closest of friends, working together, with other Mutants (some familiar, some new), to stop the greatest threat the world has ever known. In the process, a rift between them opened, which began the eternal war between Magneto’s Brotherhood and Professor X’s X-Men.

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