It's from Katie Daisy, and I absolutely adore her artwork and illustrations.
Yesterday, I went to Marshalls with the kids. (We were there to find a Slip -n- Slide, but I couldn't get out of there without also buying a Batmobile and Princess Supplies.) As we were standing in line, I looked over at the notecard display, and found a whole box of Katie Daisy notecards!
What luck! I scooped them up as fast as I could, and can't wait to frame them and put them on Charlotte's wall. The illustrations are beautiful, but I love the messages, too. Artwork for $5.99? Can't beat that!