Caitlyn Jenner admits struggling to remember birthdays of all 19 grandchildren

Watch: Caitlyn Jenner says she has to keep all the birthdays of her grandchildren on a computer

Caitlyn Jenner has admitted she struggles to remember the dates of all her grandchildren's birthdays, following the birth of her 19th grandchild - Kylie Jenner's second child.

The reality star and retired Olympian discussed her growing family while making a virtual appearance on Good Morning Britain, video calling in from Malibu.

When asked whether she has met her new grandchild, the 72-year-old said, "Oh, we're going there. Yes, I have. The family is growing.

"Kylie had her little boy, it was announced the other day. I've got to be very quiet. I have got to be very sensitive and careful when I talk about the family.

"But they're great, Kylie's doing great, everybody's doing good."

BEVERLY HILLS, CA - JUNE 18:  (L-R) Kendall Jenner, Caitlyn Jenner and Kylie Jenner pose for a photo as Caitly Jenner displays her Austin-Healey Sprite at the Rodeo Drive Concours d'Elegance  on June 18, 2017 in Beverly Hills, California.  (Photo by Earl Gibson III/Getty Images)
Caitlyn Jenner with daughters Kendall Jenner and Kylie Jenner. (Getty Images)

During the interview, Jenner explained how she remembers each child's date of birth.

"But I have the next one, the 20th grandchild, by my son Burt and his wife Val," she said. "They're due in a month with a little girl. So I'm going for number 20 here in about a month."

She added, "I can never keep all of the birthdays right, it's all on a computer."

Caitlyn's children include Kendall Jenner, Kylie Jenner, and step-children Kourtney Kardashian, Kim Kardashian, Khloe Kardashian, and Rob Kardashian, from Kris Jenner, as well as Brandon Jenner and Brody Jenner, and Cassandra Marino and Burt Jenner from previous marriages.

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NEW YORK, NY - FEBRUARY 11:  Khloe Kardashian, Kris Jenner, Kendall Jenner, Kourtney Kardashian, Kim Kardashian West, North West, Caitlyn Jenner and Kylie Jenner attend Kanye West Yeezy Season 3 at Madison Square Garden on February 11, 2016 in New York City.  (Photo by Kevin Mazur/Getty Images for Yeezy Season 3)
Caitlyn Jenner has two biological and four step-children form her marriage with Kris Jenner. (Getty Images)

With many children, this means her long list of grandchildren includes Stormi and from the newborn (whose name hasn't yet been announced to the public) from Kylie; Mason, Penelope and Reign from Kourtney; North, Saint, Chicago and Psalm from Kim; True from Khloe; Dream from Rob; Eva, Sam and Bo from Brandon; Francesca, Isabella and Luke from Cassandra; and Bohdi, William and another just around the corner from Burt.

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Kylie confirmed the arrival of her second child earlier this week, posting a black and white photo on her Instagram of her tiny son's hand, with many assuming the other hand in the shot is her four-year-old daughter Stormi's, whom she shares both with with Travis Scott.

She and her singer, rapper and producer boyfriend started dating in 2017, with Stormi then born in February 2018, following the couple keeping the pregnancy very under wraps. While they reportedly split in 2019, they seemed to have united again not long after.

The pair announced they were expecting a second child with a video on Instagram in September, which featured the positive pregnancy test, them together at scans, the moment momager Kris Jenner found out the news and Kylie's baby bump.

Travis Scott, Kylie Jenner and their daughter Stormi Webster share a moment at the premiere for the documentary
Travis Scott and Kylie Jenner with their daughter Stormi Webster. (REUTERS)

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Many fans have speculated over whether the name of the new baby is 'Angel', due to comments from celebrity friends and family. Kris Jenner wrote, "Angel Pie", while her friend Anastasia Karanikolaou, aka 'Stas', wrote "angel baby", her make-up artist Ariel wrote, "Can't wait to meet the little angel" and Kim commented with a baby angel emoji.

The date of her son's birth, '2/2/22' is also known as an angel number in numerology.