Betty White is taking on reality TV with a hidden-camera show that turns senior citizens into pranksters.

NBC has ordered 12 episodes of "Betty White's Off Their Rockers," the working title for a series based on a hit Belgian program that has been produced in other European countries and South Korea.

The reality show follows seven seniors who band together to play pranks on younger people, with White helping conspire to put one over on "the unsuspecting youth of America," NBC said.

White, 89, also stars in the TV Land sitcom "Hot in Cleveland," which has been renewed for a third season, and has a book, "If You Ask Me (And Of Course You Won't)," set for release in May.