'Sons of Anarchy' signs Ashley Tisdale for Season 5 guest arc

Former Disney Channel star Ashley Tisdale will join the cast of "Sons of Anarchy" for a guest-starring role in Season 5 that's about as far from Sharpay Evans as you can get.

The 26-year-old Tisdale, who starred in "Hellcats" in 2010-11 and guested on "Raising Hope" last season, will play a character named Emma Jean, a "high-priced, desirable escort" who comes into SAMCRO'S orbit, TVLine reports. She'll appear in at least two episodes of the show.

"Sons of Anarchy" has a history of outside-the-box casting choices. At first blush, you wouldn't think the likes of Tom Arnold and David Hasselhoff would quite fit on a show about a gun-running motorcycle club, but both have appeared on the series (Arnold has done four episodes).

Tisdale joins a guest cast for Season 5 that also includes Jimmy Smits and Harold Perrineau. "Sons of Anarchy" will return to FX in the fall.