Whitney Port has welcomed her first child.

The 'Hills' star gave birth to baby boy Sonny - who she has with her husband Tim Rosenman - on Thursday (27.07.17).

Posting on her Instagram page, she wrote: ''Sorry I've been MIA for like a week! I lost my phone. Just kidding!! I made a human! Sonny Sanford Rosenman was born on 7/27/17!!

''Everyone is so happy and healthy and we are home now. I'm going to try my very best to not be one of those moms whose feed is dominated by their baby but I can totally see how difficult it will be not to.

''I am beyond obsessed and in love and wish I could bottle this feeling for all of you out there. Check out the blog (link in bio) for more and welcome our little one to the world!! (sic)''

And in a blog post on her website, Whitney spoke of the joy at seeing her little one for the first time.

She wrote: ''So, I have some news. No big deal, but I created another human being and then delivered him into the world at 12:30am Thursday morning. Timmy and I named the little man Sonny and I'm in love ... We've all heard mothers give the same speech about how life changing the love for your baby is, and it's not like I didn't believe it or anything, but I guess I couldn't actually connect to those exact feelings until the doctor placed Sonny onto my chest.

''I love him and feel protective over him, but more than anything, I'm just like obsessed. I can't stop looking at him, or thinking about him when I am in another room. It's a bit like getting a toy you really really wanted as a child. There was all the anticipation and build up, and then you open it and you love it. Unlike the toy, however, I am obviously never going to get sick of Sonny, and he poops.

''All kidding aside, my heart just grew to accommodate all this extra love I now have to give. I don't care if this is sappy or trite and I don't want to say that I love him more than anything ever because I love Timmy and my family. It's not about loving him more than something else I love. It's just awesome. I can't wait to watch him change and grow and take on my traits and Timmy's.''