Kim Kardashian has reached a major parenting milestone as her eldest child officially becomes a teenager. 

On Monday, North West turned 13 years old, becoming the first of Kim Kardashian's four children to enter her teenage years. 

North, who is home schooled, has been working on her music career with her father Kanye West in recent months, recording songs and making performances, often while sporting blue hair and black leather outfits. 

Though she's only just turned 13, North has already become known for her personality and growing independence.  

In addition to their daughter North, Kardashian and West, who were married from 2014 to 2022 also share Saint, 10, Chicago, eight, and Psalm, seven. 

Kim wrote on Instagram, 'Happy Birthday my Northiiiiiieeeeeeeee (Uzi voice!!!) I can’t believe you are officially a teenager!!!!! There’s no one like you my baby girl! I love being your mom and watching you grow. I love you to the aliens galaxies you would speak of as a kid and beyond.'

North's grandmother Kris Jenner took to Instagram to wish her well on her birthday. 

'Happy Birthday my amazing North!' she began her note while sharing flashback photos.

'You are beautiful, brilliant, creative, funny, and smart, and you have such a love for life and everything it has to offer. 

'I love watching you grow, and seeing you find your own path and passions has been such a joy, and I am so proud of the incredible young lady you are. 

'Keep dreaming big and shining bright… I am so proud of you!! We all love you so much!! Lovey xo @northwest.'

Meanwhile, mom Kardashian has been in Europe to support her boyfriend Lewis Hamilton, 41.

On Sunday, Kardashian congratulated Hamilton after the Formula One legend secured his long-awaited first victory for Ferrari at the Barcelona Grand Prix.

The reality TV star, 45, had been present last weekend to cheer him on at the Monaco Grand Prix.

She watched on as Hamilton finished as the runner-up for the second successive Grand Prix.

Kardashian was not present in Barcelona on Sunday, as Hamilton went one better by claiming his first win since 2024.

A celebratory message was quickly shared by the star following Hamilton's triumph, as he finished clear of George Russell and Lando Norris in an all-British podium.

The Instagram post showed Hamilton powering towards the finish line, with Ferrari staff trackside cheering in celebration.

Kardashian added heart and trophy emojis to the photo in a show of support for her boyfriend.

Hamilton had claimed post-race that winning with Ferrari was beyond his 'wildest dreams'. 

'I wish I had the right words,’ he said. ‘How do you find the right words to express an emotion that's your new wildest dreams? 

'I truly believed in my decision, and joining Ferrari, I truly believed what this team could achieve, what we could achieve together.'

Hamilton is now just 41 points behind championship leader Kimi Antonelli, but sounded a word of caution over his potential hopes of an eighth world title.

‘Well, honestly, with the way that the year started out, I have not really been thinking about it like that,’ Hamilton added. ‘I’ve not been thinking about an eighth. Of course, what we had worked towards has been being able to win, but I’ve always been conscious of the fact that it takes time.'

Hamilton last week spoke publicly about his relationship with Kardashian, after blowing her a kiss from the podium.

'It's amazing to have her come this weekend and have her support. My friends [in general]. It was an incredible turnout overall,' Hamilton said.

'I don't know what else to say. It's amazing to have good people around you and supporting you. And she does that for me every day.'