Illustrate a delightful llama with a cheerful and playful demeanor, featuring a mischievous grin and a quirky touch like a colorful party hat. Use bright and vivid colors complemented by dynamic lines to convey its lively spirit. The llama might be winking or playfully sticking out its tongue, enhancing its endearing charm. This design should be crafted as a vector graphic, with bold outlines and a clean white background, perfect for a joyful sticker design.