Creative AI Prompts for Birthday Balloon Cluster Stickers

Create a lively, clean vector balloon cluster sticker featuring the phrase ‘[HAPPY BIRTHDAY]’ in an eye-catching playful font. The design should be free of shading and gradients, with a pure white background and high contrast to make it perfect for die-cut sticker formats. The balloons can vary in shape and size, with cheerful, whimsical arrangements, ensuring a fun, festive look suitable for celebrations and party decorations. Focus on crisp outlines and bold letterforms to maximize visual impact and cutability.