The boy is Kate's first child with Muse frontman Matt Bellamy and the couple are said to be thrilled with their new arrival.
Kate, 32, recently revealed she couldn't wait to meet her unborn baby because she wanted to find out its sex.
She said: "I'm really excited. I'm not in a rush, I don't have nerves, I'm so excited to have another baby, for our family, we are all really happy, so I can't wait.
"And I'm getting to the end, so I'm like, 'Ahhh, what is it going to be, who is it, is it going to come out screaming, is it going to come out quiet, is it going to have eyes open, is it going to be shut, is it going to have hair?'"
Earlier in her pregnancy, Kate revealed that her son thinks she is going to have a girl.
She said: "It feels like a girl, but I don't know. Ryder thinks it's a girl."
24.com publishes all comments posted on articles provided that they adhere to our Comments Policy. Should you wish to report a comment for editorial review, please do so by clicking the 'Report Comment' button to the right of each comment.
Kris Humphries, also known as Kim Kardashian’s ex-husband, shared a shocking tweet after Bruce Jenner’s emotional interview with Diane Sawyer. Read More »
Bruce Jenner on Friday night revealed in an exclusive interview with Diane Sawyer that she is female. Read More »
Blues meets Rock!
This is car porn at its best!
South AfricaR600 000 Per Year
South AfricaHomeMarkR15 000 - R20 000 Per Month
HousesR 4 100 000
HousesR 1 250 000
TownhousesR 2 000 000