Top Left, Clockwise:  Lanvin  |  Valentino  |  Louis Vuitton  |  Nina Ricci . Yep, the whole Nineties choker thing is back. And yet somehow the designers made the look super chic, not oddly retro. We first saw the look in a recent issue of Vogue featuring IT girls Gigi Hadid, Kendall Jenner, Rosie Huntington-Whiteley, Hailee Steinfeld, and Rihanna wearing their choker necklaces everywhere from the red carpet to the airport. While chokers have been fully embraced by trendy 20-somethings everywhere, that doesn’t mean they aren’t wearable past 30. The key is to go for simple and understated, with a little bit …