Photos of actress January Jones on the set of director Mathew Vaughn’s X-Men: First Class have hit the web. The shots feature the “Mad Men” star in her Emma Frost costume while shooting a scene in a helicopter and enjoying a juicy slice of melon (pictured above).

Jones beat out British babe Alice Eve for the part in an eleventh hour casting decision. She joins a cast that includes James McAvoy as Charles Xavier, Michael Fassbender as Magneto, Kevin Bacon as Sebastian Shaw, Rose Byrne as Moira, Nicholas Hoult as Beast, Caleb Landry as Banshee, and Jennifer Lawrence as Mystique.

Twentieth Century Fox plans to have the film in theaters on June 3, 2011.

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