Lauren Conrad welcomes her first child with husband William Tell

Lauren Conrad has confirmed that she and husband William Tell have welcomed their first child.

The TV star, who appeared on MTV shows Laguna Beach and The Hills, announced the news with a sweet snap shared to her Instagram account, sharing the baby name that the pair had chosen in the caption.

'He's here!' Lauren, 31, exclaimed to fans. 'We're so excited to welcome Liam James Tell into the world!'

Her 6.1 millons fans were quick to send messages of congratulations and compliments to the couple, with one writing: 'Congratulations, love his name!!! 💫' and another adding: 'Finally a normal baby name 🙏🏼 congratulations! :)'

Lauren revealed that she was pregnant back in January 2017, with a picture of her scan and a message which read: 'Happy New Year! I have a feeling 2017 is going to be the best year yet...'

In June, she and William told fans that they were having a boy.

'I really wanted a boy,' Lauren admitted to Fit Pregnancy and Baby. 'My husband kept saying, "We just want a healthy baby." And I'd say, "But a boy would be nice!"'

'I was a wild little tomboy, so I think I understand boys. My mom always told me that nobody loves you like a son does, especially when he's young.'

Little Liam is the first baby for both Lauren and William, who tied the knot in a California ceremony in 2014.

'I see our lives changing,' she said to PEOPLE magazine whilst she was expecting. 'I think you don't know until you're there. I have very nice friends who are attempting to prepare me, but everybody does it differently.'

'It's going to be a lot less sleep, so that'll be an adjustment, but we're excited.'

Lauren isn't the first member of The Hills cast to become a mum - her co-star Heidi Pratt (nee Montag) is currently pregnant with her first child with husband Spencer.

Fellow The Hills alumni Audrina Patridge already has a daughter, Kirra, whom she welcomed in June last year, whilst Kristen Callivari, who also appeared on the show, is a mother of three, to sons Camden and Jaxon, and daughter Saylor.