Keeping Up With The Kardashians star Kourtney, 35, welcomed a second baby boy with long-time partner Scott Disick on Sunday, 14 December.
We'd expected gushings of love and congratulations from her famous siblings Kim, Khloe, Kendall, Kylie and mum Kris Jenner but, so far, nothing!
Instead, the family has been tweeting about Kourtney's son Mason, who happened to turn five on the day his mum gave birth.
Yep, Kourtney's first born and third child share a birthday!
While Kourtney was in hospital, her family were celebrating Mason's big day with messages on Twitter and Instagram - even Kourtney managed to post a heartfelt message on the day she gave birth!
Happy birthday to the coolest little boy in the entire world. You teach me so much every single day and changed my universe the second I met you. You have taught me what life is all about and I am truly blessed and honoured to be your mommy.
Happy Birthday to the lego master Mason!!! You are so big I can't take it! You are my everything! I love you so much!
Stop growing up! How are you 5 already?!?! My ace! My Mase!
Happy Birthday my precious little Mason!!!! You have brought so much love and joy into our lives and I can hardly believe you are 5 today!!! I love you so much....#blessed #family
He's 5 and I can't take it! stop growing so fast buddy! love you Mase
So far, there is no word on what Kourtney and Scott have named their second son. They are also parents to daughter Penelope, two.
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