Back of January Jones Sees Double on the X-Men Set January Jones wore a white fur hat and go-go boots on the set of X Men: First Class this morning in Buckinghamshire, England. The Mad Men actress was joined by an identically dressed stunt double as she filmed sky-high action scenes in a helicopter. The retro outfit January sported at work today was a big change from her fashion-forward Emmys look and the glamorous gown she wore in a recent issue of Rolling Stone. She graced the magazine's cover with her TV costars Elisabeth Moss, Christina Hendricks, and Jon Hamm, who's currently off tending to his own big-screen career. He's also in Europe this week, promoting his upcoming movie The Town at the Venice Film Festival. View 10 Photos › Photo 1 Photo 2 Photo 3 Photo 4 Photo 5 To see more pictures of January at work, just . View 10 Photos › Photo 1 Photo 2 Photo 3 Photo 4 Photo 5 Photo 6 Photo 7 Photo 8 Photo 9 Photo 10 Image Source: INFphoto.com Comments any 6 years I thought that was Sienna too but she kinda looks old huh? Glamorme 6 years Oh man! I'm obsessed with anything X-Men, I know geeky but I can't help myself. So excited! And am I the only one who think Jones looks a bit like Sienna Miller?