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Finding your fit is easy. See our sizing chart below to ensure the perfect choice for your style.
Big Brother Little Brother Matching Outfits - Superhero Sidekick Cotton Shirt or Romper
Celebrate the unbreakable bond between siblings with these charming matching outfits, perfect for welcoming a new sidekick to the family team.
Key Features:
• High-quality 100% cotton fabric for maximum breathability
• Coordinated brother designs featuring 'EVERY SUPERHERO NEEDS A SIDEKICK' and 'SIDEKICK' letter prints
• Soft-touch material specifically designed to be gentle on sensitive baby skin
• Versatile sizing options including shirts for toddlers and rompers for infants
• Sold separately to allow for custom size pairing between siblings
Why You'll Love It:
• Ensures all-day comfort for active toddlers and newborns with ultra-soft cotton
• Creates picture-perfect moments for baby showers, hospital homecomings, and birthdays
• Provides a thoughtful, ready-to-gift solution for growing families
• Safe and irritation-free wear for your baby’s delicate skin
Specifications:
• Material: 100% Cotton
• Big Brother Shirt Sizes: 12 Months to 6 Years
• Little Brother Romper Sizes: Newborn to 12 Months
• Package Includes: 1 x Romper OR 1 x Shirt (Sold Separately)
Choose your sizes today and prepare your little heroes for their next big adventure together.
| Category | Size | Age Range | Height/Chest (in) | Weight (lbs) |
|---|---|---|---|---|
| Baby | Newborn | 0-3M | 19-22" | 6-10 |
| Baby | 6M | 3-6M | 22-26" | 10-16 |
| Baby | 12M | 9-12M | 26-30" | 16-24 |
| Toddler | 2T-3T | 2-3Y | 32-38" | 28-34 |
| Toddler | 4T-5T | 4-5Y | 38-44" | 35-45 |
| Kids | S (6-7) | 6-7Y | 24-25" (Chest) | 45-55 |
| Kids | L (10-12) | 10-12Y | 28-30" (Chest) | 70-95 |
| Adult | S | Chest 34-36" | Waist 28-30" | - |
| Adult | M | Chest 38-40" | Waist 32-34" | - |
| Adult | L | Chest 42-44" | Waist 36-38" | - |
| Adult | XL | Chest 46-48" | Waist 40-42" | - |
