VIDEO : North West And Penelope Disick Celebrate Birthdays Unicorn-Themed Party

Best friends forever. North West and her cousin Penelope Disick celebrated their birthdays at a unicorn-themed party on Sunday, June 3. The birthday girls ? North turns 5 on June 15, while Penelope will be 6 on July 8 ? wore matching rainbow-colored robes and swimsuits at the celebration documented by North?s mom, Kim Kardashian, [?]