The 28-year-old model confirmed that they had been approached about doing a programme about the birth of their first child, who is due this spring.
US reality star Kourtney Kardashian recently allowed cameras to film her giving birth.
But Kildare native Pippa O'Connor and her TV presenter husband Brian Ormond prefer to keep the details to themselves.
"We aren't doing a show on the baby. The idea was put to us, but we said no."
The pair took part in a documentary entitled Brian And Pippa Get Married, which showed them preparing for their big day in June 2011.
It proved a ratings hit for RTE, and there has been recent speculation that the couple could sign up for another programme.
When asked about Kourtney's controversial decision to be filmed giving birth, Pippa said that's where she would "draw the line".
Reports suggest that Kourtney's sister Kim (32) could rake in €10m in magazine deals and endorsements from her pregnancy.
It's expected that much of the excitement surrounding her becoming a new mum will be documented in the next series of Keeping Up With The Kardashians.
Kim and Kanye confirmed the good news on Twitter last Sunday, before ringing in the New Year in Las Vegas.
But it seems that even she balks at the thought of having a camera crew follow her into the delivery room this summer.
Speaking about being pregnant, she said this week it's "not fun" and she's suffering from growing pains.
Kim said: "I take lots of naps. Actually I feel really good. This New Year is just about being happy and healthy and that's what I plan on doing.
"I wouldn't say that pregnancy has been easy, but there's been no morning sickness. I'm craving sushi, but I know I can't really have it, so I'm eating a lot of carrots and celery with lots of ranch."
The couple are keen to find out the sex of the baby as soon as they can, but she said they have "no preference" and just want it to be healthy.