The former Playboy playmate convicted of possessing marijuana while accompanying Paris Hilton to a World Cup game is persona non grata in South Africa. Ronnie Mamoepa, a spokesman for the immigration department, said Saturday that Jennifer Rovero had two weeks to leave the country, and would not be welcome back for at least two years. Rovero “acknowledged to be in possession of cannabis, and pleaded guilty,” said Brig. Sally De Beer, a spokeswoman for South African police. The 31-year-old New Yorker, was sentenced to a fine of 1,000 rand ($130) or 30 days imprisonment, De Beer said.