Former model Paulina Porizkova says she never gets invited to fashion shows anymore. “I can’t get tickets,” she told Page Six, saying that the last time she’s been to a show was two years ago. “Ever since then, I haven’t bothered to try. But sitting in front of the stage watching the girls is too hard to watch. It’s like actors watching other actors work — you either get jealous, or you get mortified for them.” Porizkova will join Lauren Hutton, Jessica White, Heidi Klum and other mannequins in a documentary, Modelinia’s “History of Models,” premiering Thursday on NYC Life.