



Big Sister T-Shirts – Celebrate the Joy of Being a Sibling
🎉 Big sisters deserve to feel extra special, too!
Our adorable ‘Big Sister’ tshirt make them proud of their new role in the family. 💙💖
✨ Make your little one feel extra special with our adorable Big Sister T-Shirts! Perfect for announcing a new sibling, celebrating family milestones, or just showing off their sibling pride.
Crafted from soft, breathable fabric, these T-shirts are comfy enough for all-day wear – whether they’re playing, posing for family photos, or meeting the new baby for the first time. Featuring fun, playful designs, they’re a perfect way to celebrate the bond between siblings.
🎁 Perfect for:
- Pregnancy or baby announcements.
- Family photoshoots and gatherings.
- A thoughtful gift for soon-to-be big siblings.
More details
- 95% polyester, 5% elastane (fabric composition may vary by 1%)
- Heavyweight fabric: 6.19 oz/yd² (210 g/m²), weight may vary by 5%
- Regular fit
EU GPSR Product Information:
- Manufacturer contact information
- Name: NewBabyStore
- Email: contact@support.newbaby.store
- Postal address: PO Box 5696 Santa Monica, CA 90405
- Additional information: This product is made for children. Meets the formaldehyde and azo dyes level requirements. 2 year warranty in EEA and UK, established by Directive 1999/44/EC.
Size & Fit
Quality Guarantee & Returns
- Quality is guaranteed. If there is a print error or visible quality issue, we'll replace or refund it.
- Because the products are made to order, we do not accept general returns or sizing-related returns.
Big Sister T-Shirts – Celebrate the Joy of Being a Sibling Size Guide

Size label | A | B | C |
---|---|---|---|
2T
|
11.61
|
15.75
|
4.33
|
3T
|
121
|
16.14
|
4.53
|
4T
|
12.4
|
16.54
|
4.72
|
5T
|
12.8
|
16.93
|
4.92
|
6X
|
13.78
|
17.72
|
5.31
|
6
|
13.19
|
17.32
|
5.12
|
7
|
14.37
|
18.11
|
5.51
|