The singer, 33, announced the lovely baby news on Twitter today, revealing she gave birth to her second child, a healthy baby boy, yesterday.
Kelly also shared the name they picked for their new bundle of joy - Remington Alexander Blackstock.
Our little baby boy has arrived!! Remington Alexander Blackstock was born 4/12/16 & he is healthy & we couldn't be happier or more in love!— Kelly Clarkson (@kelly_clarkson) April 14, 2016
She wrote on Twitter: 'Our little baby boy has arrived!! Remington Alexander Blackstock was born 4/12/16 & he is healthy & we couldn't be happier or more in love!'
The Since You've Been Gone hitmaker had announced she was pregnant for a second time during one of her concerts last year, at Los Angeles’ Staples Center.
A few months later, Kelly also revealed the gender of the baby with a cute photo of Rover Rose on social media.
'In other news, River's going to have a little baby brother :) We're so excited!', Kelly wrote in the caption of the picture of River smiling on top of a slide.
Although this was her second experience at pregnancy, Kelly revealed in an interview with American television network CBS that she still suffered with morning sickness.
'I’m familiar with all-day sickness', she said in November. 'I have to get IVs and fluids because I get so dehydrated. It’s really bad.'
When she was expecting her first daughter River, who was born in June 2014, the singer also talked about having a difficult pregnancy.
'I vomit a good dozen times a day. It's, like, bad', she told Ellen DeGeneres in December 2013.
Kelly got engaged to her husband Brandon, a Nashville-based talent manager, in 2012 and and the two got married the following year, in October.
While this is Kely's second child, Brandon has two children from a previous marriage, Savannah and Seth.
And it seems the singer will stop at two, as she recently revealed in an interview with Australia's KIIS FM.
'Oh, no, we are done. Oh good Lord, yes, I can't be pregnant again. This will be our number four total, so we're good.'
Congratulations to the happy couple!