Khloe Kardashian‘s son is now officially Tatum Thompson.

The reality star, 39, has legally changed her child’s name to Tatum Thompson after initially identifying him as ‘Baby Kardashian’ on his birth certificate, according to People.

A judge in Los Angeles county granted the name change on Thursday, according to the outlet.

At the time of Tatum’s birth, Khloe had not yet decided on the child’s name.

She and her then-boyfriend Tristan Thompson welcomed Tatum via surrogate  in July 2022. They also have five-year-old daughter True together.

It’s official! Khloe Kardashian’s son is now officially Tatum Thompson after a judge signed off on the name change on Thursday

California law allows parents to give their child either the paternal last name, the maternal last name, or a combination of the two, People reports. The final decision will be permanent unless the court intervenes.

While Khloe initially gave her son Tatum the legal surname Kardashian when he was born, she later changed his surname to Thompson, TMZ reported in June.

The site reported at the time that the baby had a different first name initially but they were unable to confirm what that was.

It’s fair to say that Khloe’s relationship with Tristan would have been strained around the time Tatum was born via surrogate.

It’s been well-publicised that the sportsman got another woman. Maralee Nichols, pregnant after Khloe and Tristan had decided to use the surrogate to carry Tatum.

Moreover, Khloe recently opened up about failing to connect with her newborn son Tatum, three months after he was born via the surrogate on Hulu’s The Kardashians.

While Kim was jetsetting to Milan and Kourtney and Kendall were in New York City, Khloe was back home in Los Angeles with Tatum.

Her mother Kris Jenner pays her a visit early on in the third episode of The Kardashians Season 3 – entitled Everything Is My Fault!

Khloe – who was awkwardly asked out on a date by Scott Disick in a previous episode – admitted to Kris, ‘I feel guilty,’ since she hasn’t been able to ‘connect’ with her son yet, three months after his birth.

Oh boy! She and her then-boyfriend Tristan Thompson welcomed Tatum via surrogate in July 2022

Going through it: While Khloe initially gave her son Tatum the legal surname Kardashian when he was born, she later changed his surname to Thompson, TMZ reported in June

Troubled times: It’s fair to say that Khloe’s relationship with Tristan would have been strained around the time Tatum was born via surrogate after Tristan got another woman pregnant

Guilty: Khloe recently opened up about failing to connect with her newborn son Tatum, three months after he was born via a surrogate on Hulu’s The Kardashians

Khloe also revealed to Kris that she has set new boundaries for her ex/baby’s father Tristan Thompson, insisting she’s not getting back together with him.

Kris asks how Khloe feels – three months later – about the whole surrogacy process and Khloe says, ‘When you compare it between True and him, it’s a very different experience, the connection.’

‘With True, it took me a couple of days, to be like, ‘OK, this is my daughter and I was super into it,’ but just days. With him, it’s taking me months. I love him and I love kids, but I definitely still don’t have that complete bond, but so many people say it takes time,’ Khloe says.

Kris adds, ‘I think that for you, you’ve been through a lot. Your emotions are spent on trying to deal with trauma and all the stuff that you’ve been through and I think you have to remember that. I mean, you have to give yourself a little bit of credit.

Khloe agrees but says she feels, ‘guilty’ because it’s not the same, adding she doesn’t treat him differently but she just questions herself sometimes.

Kris adds that she should give herself a break because every time she comes over Khloe is, ‘mother of the year, always feeding someone or entertaining someone or doting on your kids. You’re the most attentive person to all of us.’

Khloe adds in confession that she wishes she wasn’t, ‘so critical of myself because I’m very kind to everyone else, I’m just not kind to myself.’

‘Being a mom is truly one of the most magical experiences ever,’ Khloe adds in confession, as Kris asks to hold the baby, but Khloe warns he might throw up on her.

Kris is holding the child and she starts crying as Kris adds, ‘See your mom jumps up. Who is connected? Who’s connected?’

Earlier in the episode, Kris asked how everything is going with Tristan, as Khloe takes a breath before adding, ‘We always get along great.

‘Him and I have a great friendship relationship, we get along fine and for my kids, I will put anything to the side.

‘What’s done is done, so what would I still be holding on to something for. I don’t need to ‘punish him’ because I’m not getting back with him.’

Kris adds that she came over the other day and Tristan was there feeding their five-year-old daughter True and it was, ‘really cute.’

‘And if I’m not here and not around, he’s here and I would rather him be here than a nanny. I mean, there are still boundaries. Like, I’ve definitely put my foot down around a lot of things. Like, no one is just here chilling if there are no kids involved,’ Khloe tells Kris.

Kris: Kris adds, ‘I think that for you, you’ve been through a lot. Your emotions are spent on trying to deal with trauma and all the stuff that you’ve been through and I think you have to remember that. I mean, you have to give yourself a little bit of credit.

Guilty: Khloe agrees but says she feels, ‘guilty’ because it’s not the same, adding she doesn’t treat him differently but she just questions herself sometimes

Khloe adds in confession that the boundaries are important because, ‘we’ve done this song-and-dance a handful of times already.’

‘I’ve gotten back with him after a cheating scandal, so I don’t know if Tristan is under the impression of, “Oh wow, let’s just ride this out and eventually she’ll get back with me.” I get why he would think that. So it’s my job to set boundaries that my actions show otherwise,’ she says.

Khloe tells Kris that they are not there just hanging out by themselves or watching TV together, adding in confession that she makes sure he knows, ‘it’s all about the kids.’

‘I can’t let those old habits just easily come into my life. It’s just not what I want,’ she adds in confession, while Kris says that makes her happy.