TwitterKelly Clarkson's son made a rare appearance on Father's Day 2016.
The pop star posted a tribute Sunday on Twitter to husband Brandon Blackstock, which included a photo of him holding their 2-month-old son Remington Alexander and daughter River Rose Blackstock, who recently turned 2.
"Happy Father's Day @BBlackstock #PieceByPiece Thnx 4 being such a great dad 2 all 4 of our kiddos! #sexydaddyalert," she wrote.
Brandon also has two children from a previous marriage.
A fan tweeted at him saying he seems like a "great guy" because of the father he is to his kids.
"Thx buddy! My kiddos are my life!" Brandon replied.
This marks the fourth photo of Remington that Clarkson, who has largely stayed away from the spotlight since he was born, has shared on social media. Clarkson had previously shared three photos of Remington soon after she gave birth to the child.
She has shared many pics and videos of River on social media over the past two years, including on her recent birthday, when she received a Disney book as a present.
"Happy Birthday to my little one," Clarkson tweeted. "She is very excited about her princess book ha! #RiverRose #TerribleTwos."