Personalized Big Sis Groovy Heart Design Toddler Dress. Celebrate the joy of being a big sister with this fun and groovy style. Featuring bold, playful lettering and a charming heart, this Toddler Dress - Natural with Stripes is perfect for showing off sibling pride. Your little one will be adorable and comfortable in this 100% combed ringspun cotton 1x1 baby rib dress!