Kim Kardashian vs. Kendall Jenner: Who's Having the Best Week Ever?

Kim wrote the book on keeping up with a Kardashian, but can her little sis one-up her? We imagine how Kris Jenner would decide

FEB. 17: KIM

We think Kris would give this day a … 5
As Jimmy Fallon made his Tonight Show debut, he had some very special (and famous!) supporters in his audience, including Kardashian. The reality star posted photos from her star-studded outing, including a group shot with Mike Tyson, Joan Rivers, Lindsay Lohan, Sarah Jessica Parker, Tracy Morgan and Lady Gaga.