It's a boy! Caitlyn Jenner to become a grandparent again as daughter Casey Marino confirms she is pregnant with a son

She has a bumper brood of six children.

And it has now emerged Caitlyn Jenner is to be a grandparent yet again after daughter Casey Marino confined she is pregnant with a boy on Tuesday.

It will be a third child for the 35-year-old, who already has two daughters with her husband Mark.

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Grand news: Caitlyn Jenner is to be a grandparent yet again after daughter Casey Marino confirmed she is pregnant with a son

Grand news: Caitlyn Jenner is to be a grandparent yet again after daughter Casey Marino confirmed she is pregnant with a son

She told People: 'I feel very blessed and excited.'

Having a son will certainly be a change for the interior designer, as she is a mother to girls daughters Francesca, six, and four-year-old Isabella. 

It is yet more good news for the 66-year-old I Am Cait favourite, as her son Burt Jenner announced in December that he is expecting a son with girlfriend Valerie Pitalo.

His other son Brandon Jenner also welcomed daughter Eva James in July, his first child with wife Leah.

It is yet another exciting development for the Jenner clan, who last year experienced a huge change in their family as Bruce transitioned to her Caitlyn persona.

See more on Caitlyn Jenner as she becomes a gran again as daughter is pregnant

Dynamic duo: Casey, pictured with friend Taylor Armstrong, confirmed her happy news to People

Dynamic duo: Casey, pictured with friend Taylor Armstrong, confirmed her happy news to People

Casey's mother is Caitlyn's first wife, Chrystie Crownover, who she was married to for nine years from 1972 to 1981. 

Last year the older sister of Burt, Brandon, Brody, Kendall and Kylie talked about how her relationship with her father has changed after the gender transition.

Casey said in July: 'My relationship with Caitlyn is much better than with Bruce.'

'We didn't talk for years, and now we see each other every couple of weeks and talk on the phone, which I am grateful for.

'She is trying harder and there is a softness to Caitlyn that is new to me. I think part of that is that when someone is happier, they are just nicer.' 

Bumper brood: She is expecting a boy in October and already has two daughters with her husband mark

Bumper brood: She is expecting a boy in October and already has two daughters with her husband mark

Family first: She is older sister to Burt, Brody and Brandon

Family first: She is older sister to Burt, Brody and Brandon

But she cautioned that there is still a long road ahead to repair the damage done, saying: 'We still have a lot of work to do.'

In the Vanity Fair magazine where Caitlyn made her debut back in June, Casey revealed she found out her father wanted to abort her when she was just a teenager.

She told the publication: 'I never knew he wasn't at my birth until I was about 13 years old and we were arguing on the phone about money. He kept saying, "You don’t know the whole story"

'I hung up the phone and was asking my mom what he was talking about until she confessed the history behind my birth.'

Jenner recalled to the magazine that the couple - who were married from 1972 to 1981 - found out Chrystie was pregnant halfway through their divorce. 

Then: Bruce with sons Burton, Brandon, Brody, daughter Casey and ex-wife Kris, and stepchildren Khloe, Kim, Kourtney and Robert Kardashian in 1993

Then: Bruce with sons Burton, Brandon, Brody, daughter Casey and ex-wife Kris, and stepchildren Khloe, Kim, Kourtney and Robert Kardashian in 1993

And now: The Kardashian-Jenner clan and significant others pictured together as Caitlyn was honoured at the ESPYs in July  last year

And now: The Kardashian-Jenner clan and significant others pictured together as Caitlyn was honoured at the ESPYs in July last year

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