Kourtney Kardashian. Picture: Instagram

Kourtney Kardashian admits she regrets letting the 'Keeping Up With the Kardashians' cameras in to film her giving birth to Mason, seven, and five-year-old Penelope.

The 38-year-old star allowed the births of her and Scott Disick's first two kids, Mason, seven, and five-year-old Penelope, on reality TV show 'Keeping Up With the Kardashians' but not their third child, Reign, two, and she now regrets letting the cameras in. 

READ: The Kardashians sign R2 Billion deal with E!

When asked if she wishes she'd kept something private which aired on the show, she said: "The first thing that comes to mind is sharing the birth of my kids on the show. But you live and you learn. If I started to think of regrets I would probably go crazy."

However, the raven-haired beauty has admitted she is sometimes "happy" she shared her "beautiful" birthing experience. 

She said: "I was sitting in my doctor's office recently and this woman came up to me and told me that they had to watch me giving birth in her birthing class.

you’re the son in my morning babe

A post shared by Kourtney Kardashian (@kourtneykardash) on

"It was to prove it could be beautiful and calm and not people screaming at the top of their lungs and feeling so, like, frantic. 

"I was so scared before I gave birth, but I had a beautiful experience. I'm happy I shared that."

Kourtney loves working with her famous family on 'Keeping Up With the Kardashians' - which recently celebrated its 10-year anniversary - and never worries about the clan running out of material. 

She added to Grazia magazine: "Every day I wake up and say a prayer and thank god for my job and my kids and my family. Everything has a downside, but to be able to work with my family ... I do feel really blessed.

"Do I ever get worried that there's nothing left to film? No, it just doesn't happen. "When we think, 'Oh there's nothing else,' something will happen."

The Kardashian-Jenner stars are said to have signed a reported $150 million deal with E! to continue airing the show.