January Jones filmed a western movie in between seasons of ‘Mad Men’. She must have had plenty of time to shoot, because she was hardly in the last season at all! But now we know why she dyed her hair red for so many months! She was filming her new movie, ‘Sweetwater’.

Best known for playing the icy and elegant ex-Mrs. Draper on Mad Men, the beautiful blonde stars as a vengeful 19th-century frontier woman in Sweetwater, an indie with Ed Harris and Jason Isaacs that premieres next week at the Sundance Film Festival. Sarah and her Hispanic husband, Miguel (Eduardo Noriega), court trouble when a sadistic local rancher (Isaacs) eyes their land and is threatened by their independence. But when Miguel disappears, Sarah proves she’s no pioneer pushover. “She reminded me of Clint Eastwood in Pale Rider, kind of dark and mean,” says Jones. “She has a stalking, predator type quality that I’d only really seen in male roles, and I tried to summon that up when I was playing her.”

Harris plays a sheriff who might prove helpful to Sarah’s plight, but they both have to face down Lucius Malfoy himself. “When I first met [Isaacs] off screen, he’s super charming and a very handsome man with very blue eyes,” admits Jones. “But there were moments in the film when he needed to frighten me, and he did a good job. There wasn’t a lot of acting involved.”

Here are some new pictures of January and her son, Xander, in Pasadena yesterday afternoon. He’s getting so big!

Photos: FameFlynet, Source