What do you give the girl who has everything for her 33rd birthday? A 15-carat Lorraine Schwartz square diamond ring, of course. Kardashian had yet another reason to celebrate on her Oct. 21 milestone when Kanye West – whom she first stepped out with in April 2012 – popped the question in front of family and friends at San Francisco's AT&T Park. Her response: "YES!!!" Kardashian wrote on Instagram, sharing a shot of her enviable accessory.