They are a close family, sharing everything with their television audience - and each other.
And tonight's grand finale of Keeping Up With The Kardashians was no different, with the birth of little Penelope Scotland witnessed by the entire clan.
Sisters Kim and Khloe, brother Rob, younger half siblings Kendall and Kylie, mother Kris Jenner and long-term boyfriend Scott Disick were all inside the delivery room to see Kourtney pull the little girl out with her hands.
'Kourtney just loves to pull out her own children,' said Khloe after the birth.
'It's such a magical feeling to say hello to my baby girl,' said Kourtney, who remained calm throughout the delivery, although mother Kris Jenner was in tears.
'Watching my daughter give birth, it reminds me, it doesn't get better than this,' she told the cameras.
