She and her baby daddy, Kanye West, stayed home with daughter North, while the rest of her reality TV family tried to put their growing number of scandals aside to celebrate its youngest member's big day at Nobu Malibu.
Kourtney Kardashian and HER baby daddy, Scott Disick , put their paternity suit scandal aside -- a model is claiming he's the real dad of her son. The couple showed up with little Mason, and their daughter, Penelope.
But back to the birthday girl.
"Happy Birthday to my baby sis @kyliejenner !!!! Can't believe your 16! I love you so much!" Kim wrote.
As the party wound down, Kylie blew out the candles on her cake, and received gifts from -- can you believe it? -- DASH!
That's what we call Keeping Up with the Kardashians.