June 26, 2012 12:50 PM

Ashley Tisdale has gone biker chick.

In this just-released photo from the set of FX’s Sons of Anarchy, the High School Musical alum, 26, rocks a biker helmet and baggy sweatshirt – a far different look from what she sported back in her Disney days.

“Doing 2 episodes!” Tisdale Tweeted Monday morning. “So excited because it’s my favorite show!”

According to Entertainment Weekly, Tisdale will be playing the role of Emma Jean, a high-priced escort. In this shot, Sons star Charlie Hunnam seems to be taking Tisdale’s character under his wing.

Tisdale, who is currently dating Step Up Revolution director Scott Speer, has also signed on to replace Anna Faris as the star of the Scary Movie franchise.

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