Big Sister Little Sister Matching Shirt Set Sibling Outfit

Welcome to California Tee House.

Celebrate the sweetest sibling bond with this Big Sister & Little Sister matching outfit, designed for picture-perfect moments and unforgettable announcements. The soft pastel colors, playful retro lettering, and floral details create a warm, joyful look that feels both modern and timeless.

This matching set is perfect for welcoming a new baby and making big sister feel proud and included.

🎨 Design & Quality
✔ Vibrant & Long-Lasting Print – Direct-to-garment (DTG) printing for high-quality, fade-resistant designs.
✔ Soft & Comfortable Fabric – Made from 100% lightweight cotton for a breathable and cozy fit.
✔ Available in Multiple Sizes – Infant, toddler, and youth sizes.

Please note: This listing is for the shirt only. Bottoms and accessories are not included.

📏 Sizing Guide

To ensure the perfect fit, refer to the size chart in the photos section.
💡 If unsure about sizing, consider ordering one size up.

Infant-Toddler
0–3M – Weight: 6–12 lbs, Height: 21–24 in
3–6M – Weight: 12–16 lbs, Height: 24–26 in
6–9M – Weight: 16–20 lbs, Height: 26–28 in
12M – Weight: 20–24 lbs, Height: 28–30 in
18M – Weight: 24–28 lbs, Height: 30–32 in
24M / 2T – Weight: 28–32 lbs, Height: 32–34 in
3T – Weight: 32–35 lbs, Height: 34–38 in
4T – Weight: 35–39 lbs, Height: 38–40 in
5T – Weight: 39–43 lbs, Height: 40–44 in

Youth T-Shirt

XS (US 4): Sleeve Length – 13 ¼", Full Body Length – 20 ½", Body Width – 16"
S (US 6-8): Sleeve Length – 14 ¼", Full Body Length – 22", Body Width – 17"
M (US 10-12): Sleeve Length – 15 ¼", Full Body Length – 23 ½", Body Width – 18"
L (US 14-16): Sleeve Length – 16 ¼", Full Body Length – 25", Body Width –19"
XL (US 18-20): Sleeve Length – 17 ¼", Full Body Length – 26 ½", Body Width – 20"

🚀 Production & Shipping
✅ Processing Time: 1-3 business days (doesn't include shipping time).
✅ Shipping Options:
Standard (USPS First Class Mail): 4-6 business days
Priority Mail: 2-4 business days
Express Mail: 1-2 business days
📦 Rush Orders Available! Contact us directly for expedited processing.

📖 How to Order

1️⃣ . Select the size from the size chart.
2️⃣ . Enter any personalization requests (if applicable).
3️⃣ . Proceed to checkout.
💰 All active sales and discounts will automatically apply at checkout.

🧼 Care Instructions

To maintain the quality and longevity of your shirt:
✔ Turn inside out before washing.
✔ Wash in cold water with mild detergent on a gentle cycle.
✔ Do NOT use bleach or fabric softener.
✔ Lay flat or hang to air dry (recommended).
✔ If ironing is needed, iron inside out – do not iron directly on the design.

⚠️ Refund & Exchange Policy
All items are made-to-order; NO refunds or exchanges unless there is an error on our part.
Please carefully read the size chart and measure before ordering.
Color variations may occur due to different screen settings.
📢 Legal & Copyright Notice
ONESIES® is a registered trademark of Gerber Childrenswear LLC.
Three Seeds Apparel holds full rights to this design. Unauthorized reproduction or duplication will result in legal action.
💖 Thank you for supporting our small business! 💖

📩 Feel free to message us with any questions—we typically respond within an hour! 🚀