Anyone who follows Kelly Clarkson on Instagram was left scratching their heads on Sunday night thanks to three cryptic uploads to her account, but now the mystery has been solved! The "Piece by Piece" singer posted two videos and one photo that all had clues hinting at a new project, which involved her super cute daughter, River Rose, and now we know why: Kelly wrote a children's book all about her. She posted a final video on Tuesday with the caption, "I'm officially a children's book author! River Rose and the Magical Lullaby comes out this October! #NewProject." So exciting! Keep reading to see each of her Instagram posts leading up to the announcement, and check out the hilarious moment River met Santa.