Design a humorous graphic t-shirt featuring a cartoon-style sloth lounging comfortably on a sturdy branch, adorned with oversized, stylish sunglasses and sipping a coconut drink with a straw. The sloth should have a relaxed grin, embodying a carefree attitude. Above the sloth, incorporate the playful text 'Just Chillin!' in a bold, rounded font that complements the cartoon style, ensuring it’s large enough to be easily readable from a distance. Utilize a vibrant color palette dominated by tropical greens (hex: #28B463) and bright yellows (hex: #F7EA00) to evoke a fun, laid-back vibe. The composition should balance the sloth and text, potentially adding subtle tropical elements like palm leaves or flowers around the edges for added flair. Ensure the design is suitable for digital printing on high-quality cotton fabric to enhance the print’s vibrancy and longevity. Include post-production effects like light outlines and shading to accentuate the cartoonish features of the sloth and the text, making it appealing to young adults who appreciate a lighthearted take on relaxation and leisure.