Hilaria Baldwin is considering having another baby.

The 34-year-old yoga instructor is heavily pregnant with her fourth child - a baby boy - but she has admitted her daughter Carmen, four, is already pushing her into giving her a little sister.

The brunette beauty - who also has two-year-old son Rafael and 20-month-old son Leonardo with her husband Alec Baldwin - told 'Entertainment Tonight': ''Mommy doesn't even want to think about another one right now. But we'll see if she [Carmen] bullies me into it.''

Alec - who also has 22-year-old daughter Ireland from a previous relationship - jokingly chimed in: ''We can't afford it [another child]. [We're] pretty broke.''

The couple - who got married in 2012 - are counting down the days until they meet their bundle of joy but, unlike their other kids, they haven't actually got a name picked out for him yet.

Alec, 60, joked: ''Jimmy Fallon Baldwin... Fallon Kimmel Badwin.''

Hilaria added: ''This is the first one that we really don't know going into it, and we're going to see what he looks like and take a good look.''

But, in the meantime, the pair are doing their best to make sure they pack in plenty of time together as a couple before their hands are full with another young child.

Hilaria said recently: ''Alone time before number 4 comes...Alec always tells me that no matter how many kids we have and that we are ''husband'' and ''wife'', I'll always be his girlfriend. We really work hard to maintain this. How do you feel about this in your own relationships? #WeGotThis2018 is @apeainthepodmaternity (sic)''