Paris Hilton may have exchanged one oil-rich city for another, with news she is to scrap her Calgary Stampede appearance scheduled July 5 to instead film her exquisitely surreal new “reality” television saga, Paris Hilton’s Dubai BFF in the United Arab Emirates. It’s not clear if the decision to ditch the Stampede is due to a scheduling conflict or her recent split from Doug Reinhardt, the baseball player-cum-Hills reality TV star.