Khloe Kardashian filmed labour, delivery for KUWTK

It’s believed the stress of Tristan Thompson's alleged infidelity caused reality TV star - who wasn’t due to give birth until the end of April - to go into early labour.

‘Keeping Up With the Kardashians’ star Khloe Kardashian has given birth to a baby girl. Picture: @khloekardashian/Instagram

LONDON - Khloe Kardashian’s labour and delivery were filmed for Keeping Up With the Kardashians.

The 33-year-old reality TV star reportedly allowed the cameras of her family’s E! show into her delivery suite at the Cleveland Clinic in Ohio in the early hours of Thursday so they could document her baby daughter being born for the forthcoming season 15.

And that wasn’t the only thing the cameras caught as it’s believed the blonde beauty allowed them to record her reaction when she found out her boyfriend Tristan Thompson had allegedly cheated on her numerous times while she was pregnant, according to PEOPLE.

It’s believed the stress of the alleged infidelity caused Khloe - who wasn’t due to give birth until the end of the month - to go into early labour, but luckily her mother Kris Jenner, her sisters Kim Kardashian West and Kourtney Kardashian and best friend Malika Haqq managed to fly from Los Angeles to Cleveland in time to help her through the birth.

Despite the stress he’s caused, Khloe allowed 27-year-old Thompson - who also has a 16-month-old son called Prince Oliver from a previous relationship - into the delivery room.

A source said: “Khloe laboured yesterday at the hospital. Thompson was there for the birth. He has practice today but will spend as much time at the hospital as possible.”

And, although their relationship is the hot topic of conversation, Khloe is determined to put the cheating scandal - which kickstarted this week when a video emerged of Thompson seemingly kissing another woman - to the side for the sake of their new-born daughter.

The insider explained: “Everyone is focused on what’s best for their baby girl. Khloe is being the bigger person and letting Thompson bond with their baby.”

Thompson was captured on camera chatting with an unidentified woman at the PH-D lounge in New York City earlier this month, before seemingly leaning in for a kiss.

The woman who took the video said: “I was there, and he was on the table right next to us with a group of friends and some girl who he was obviously making out with all night.

“They were holding each other, and it was so obvious. They were there when I got there, and they were part of a big group of friends.

“They were talking and being around each other all night. He was texting and talking on the phone and she was obviously looking over his shoulder.

“Everybody knew who he was. We talked about it and everybody watched them make out several times. I have obviously seen him before and people around me were like, ‘That’s Tristan Thompson’. I have seen him on TV.”

This isn’t the first time Thompson has been accused of being unfaithful either, as TMZ alleged he had cheated on the Keeping Up with the Kardashians star twice in October.