Former People’s Revolution p.r. exec Stephanie Vorhees has a new career: She’s joined Halstead Property as a real-estate agent. Vorhees, a finance major, was a principal on the Bravo reality show “Kell on Earth,” which follows Kelly Cutrone‘s public relations firm. But the somewhat disor ganized Vorhees was dumped on Monday’s episode, taped last fall. “I do not often hire someone without experience, but she showed a certain spark,” said Halstead’s Richard Grossman.