Clean flat-vector illustration, portrait orientation: a big goofy Holstein cow wearing a tiny polka-dot party hat leans over a towering pink-frosted birthday cake; cheeks puffed mid-moo as gust lines whoosh across, bending candle flames sideways and flicking sprinkles into the air. Colorful round balloons tied to the cow’s tail, confetti drifting, simple rolling green hill with a few white daisies, pale sky with a clean sun circle. Bold geometric shapes, crisp outlines, solid color blocks, minimal or no gradients, bright playful palette (mint, sky blue, sunny yellow, coral, lilac, black & white), high contrast, plenty of clean negative space, centered composition, funny mood. Add a small single-line caption at the bottom center: “Hap-MOO Birthday!” in a friendly rounded sans-serif, uppercase, deep navy. No other text, no textures, no realism—pure vector precision.

Generated with these themes: Happy Birthday Moo, and .

Made with ❤️ by AI.