Kelly herself confirmed the amazing news and revealed her son's precious name on Thursday, with a tweet to her 10.8 million followers.
“Our little baby boy has arrived!!” The mother-of-two said proudly before revealing his unique name.
“Remington Alexander Blackstock was born 4/12/16 & he is healthy & we couldn't be happier or more in love!”
The Since U Been Gone singer joyfully announced her second pregnancy in a hilariously spectacular fashion in August of last year during one of her live shows.
Whilst mid-way through a performance at the Staples Center in LA, the mother to one-year-old daughter River Rose Blackstock explained to the crowd, “This is not how I wanted to announce [that I'm pregnant]. My makeup artist is backstage hating me. I didn't want you to think I'm on pills or something."
“I would like to apologise to my husband. This was not planned. I'm just so hormonal. Everything is great, I haven't vomited yet. That's a win y'all.”
Watch Kelly's emotional announcement in the video player below! Post continues...
Shortly after her quirky announcement, the American Idol winner and her doting husband, Brandon Blackstock took to Instagram to reveal the bub's gender.
“In other news, River's gonna have a little baby brother :) #itsaboy We're so excited,” the 33-year-old shared along with a sweet photo of their first born, who was born in June last year.
Kelly had admitted that she finds the nausea associated with pregnancy notoriously difficult, with the star ending up in hospital on bed rest due to her intense morning sickness.
"I'm familiar with all-day sickness,"she said during an interview with CBS This Morning.
"I have to get IVs and fluids because I get so dehydrated. It's really bad."
She also admitted to similar sensations when she was expecting her first daughter River Rose, but we're sure the healthy arrival of her newest little one has made the last nine months worth it!
Congratulations Kelly and Brandon! We can't wait to meet your little one.