The Knowles-Carter clan was in the building for Kris Jenner's lavish 70th birthday celebration. Source: Matt Winkelmeyer/GA / Karwai Tang A who's who of Hollywood made their way to Jeff Bezos and Lauren Sanchez's Beverly Hills mansion for the Kardashian-Jenner matriarch's birthday party over the weekend. To mark her milestone 70th year, Jenner's family and famous friends dressed to the nines for the James Bond-themed bash, which included an appearance from Jay-Z, Beyoncé, and Tina Knowles.