On Thursday — one day after she and Jeff Bezos had a cozy dinner date with Trump — Lauren Sánchez celebrated her 55th birthday. Naturally, all of her famous friends used the occasion to remind the public just how much they love the Amazon founder’s fiancé. Everyone from Kris Jenner and Kim Kardashian to Eva Longoria showered the children’s-book author with birthday wishes and compliments, and wow were they effusive. “Happy Birthday to my amazing friend...