This card shows three snug little cats sitting shoulder to shoulder on a flat green background, their small smiles and close spacing suggesting an easy friendship 💚. At the top, the word “HAPPY” appears in white and dark green letters, with tiny white shamrocks placed to either side. On the left is an emerald-green cat with bright yellow eyes and rosy cheeks, angled slightly inward as if leaning toward the others. In the middle sits a white cat covered in uneven green polka dots, echoing the background color and giving it a cozy, dressed-up look ☘️. On the right, an orange tabby with light speckles completes the row, its curved white tail curling forward like a soft accent. Below the cats, “ST. CATTY’S DAY” is written in a friendly style, followed by “STEP SISTER” in matching lettering, with two larger shamrocks framing the lines. The cats all have simple white whiskers and rounded faces, and the orange cat’s tail forms a smooth white curve along the lower right edge.