Kim Kardashian reveals her pregnant sister Kourtney wasn't at her birthday bash because she was on 'bed rest'

Kim Kardashian slips back into comfy SKIMS loungewear for selfie shoot in her HUGE bathroom... after being the belle of the ball at 43rd birthday party

Kim Kardashian poses with Lauren Sánchez, Ivanka Trump and her famous sisters in more social media snaps from her 43rd birthday bash in Beverly Hills (but Kourtney skipped it)

Kim Kardashian Reveals Why Sister Kourtney Wasn't at Her Birthday Party