January Jones boards 'X-Men: First Class'

January Jones is the latest to join the big cast of Matthew Vaughn's upcoming action adventure "X-Men: First Class," the 20th Century Fox project that is currently on track for a release June 3, 2011.

Variety says Jones is all set to play Emma Frost in the film. Michael Fassbender is on board to play the man who will eventually become Magneto, while James McAvoy plays a young Charles Xavier.

The cast, which has been growing fast, includes Jason Flemyng, Bill Milner, Morgan Lily, Zoe Kravitz, Kevin Bacon, Rose Byrne, Edi Gathegi, Nicholas Hoult, Caleb Landry Jones and Jennifer Lawrence.

"Class" sort of acts as a prequel, focusing on what was going on with Professor X and Magneto when they were close friends. New villains will be introduced as well. Bryan Singer wil produce "First Class."