Baby Remington is cuter than cute!

Kelly Clarkson shared the most adorable photo of her six-month-old son on Twitter — and he looks a lot like his older sister, River Rose, when she was his age!

"Remy was shocked as well when he found out we were a New York Times Best Seller! #RiverRoseAndTheMagicalLullaby," the 34-year-old music icon captioned the sweet pic. Just prior to sharing this snapshot of Remy, Kelly posted a photo of her two-year-old daughter's sweet reaction to the news that their new children's book made the highly-acclaimed list.

MORE: Baby No. 3 For Kelly Clarkson? Get the Surprising Details!

The American Idol winner and her husband, Brandon Blackstock — who married in October 2013 — previously welcomed Remington in April 2016 and River in June 2014.

Click through the gallery below to see River and Remington’s cutest photos!