Kendall Jenner & Kylie Jenner wished big sister Kourtney Kardashian a happy 33rd birthday today. The girls posted this message on their blog: Happy happy birthday to our beautiful big sister Kourtney!!! We love you so much and hope you have a perfect day! XO, Kendall and Kylie
Leave it to Kim Kardashian to make this a part of her maternity wear.
Research and development has never looked this sexy.