• May include: A light beige short-sleeved t-shirt with the text "IN MY BIG SIS ERA" in colorful retro-style lettering with butterflies and stars.
  • May include: Pink t-shirt with the text "In My Big Sis Era" in colorful retro letters with butterflies and stars.
  • May include: White baby onesie with the text "IN MY BIG SIS ERA" in colorful retro font with butterflies and hearts.
  • In My Big Sis Era Toddler T-Shirt, Retro Big Sis Shirt, Big Sister Toddler Shirt, Cute Big Sis Kids Shirt, Cute Big Sister T Shirt image 4
  • May include: A light blue baby onesie with the text "In My Big Sis Era" in colorful retro font. The onesie is decorated with hearts, butterflies, and stars.
  • May include: A cream-colored baby onesie with short sleeves features a colorful graphic that reads "In My Big Sis Era" with butterflies and stars.
  • May include: A size chart for onesies with a graphic of a onesie with the text "US" inside a circle. The chart shows sizes in months, length in inches, and weight in pounds. The chart is on a beige background with a white outline.
  • May include: A size chart for toddler clothing with a graphic of a t-shirt featuring the text "Little Kids US". The chart shows sizes 2T, 3T, 4T, and 5T with corresponding length and weight ranges in inches and pounds.
  • May include: Youth size chart for t-shirts with measurements in inches. The chart shows sizes S, M, and L with corresponding chest and length measurements. The chart also includes age ranges for each size: 6-8, 10-12, and 14-16.
  • May include: Size chart for youth and toddler sweatshirts. The chart shows sizes in inches and age ranges. The color options include white, black, red, gray, green, maroon, navy blue, light blue, pink, and light gray.
  • May include: A light beige short-sleeved t-shirt with the text "IN MY BIG SIS ERA" in colorful retro-style lettering with butterflies and stars.
  • May include: Pink t-shirt with the text "In My Big Sis Era" in colorful retro letters with butterflies and stars.
  • May include: White baby onesie with the text "IN MY BIG SIS ERA" in colorful retro font with butterflies and hearts.
  • In My Big Sis Era Toddler T-Shirt, Retro Big Sis Shirt, Big Sister Toddler Shirt, Cute Big Sis Kids Shirt, Cute Big Sister T Shirt image 4 +7 View all
Report this item to Etsy

In My Big Sis Era Toddler T-Shirt, Retro Big Sis Shirt, Big Sister Toddler Shirt, Cute Big Sis Kids Shirt, Cute Big Sister T Shirt

UniStoreCollection

By UniStoreCollection

Owner of UniStoreCollection

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Please select an option

What to know

Materials

Cotton

Made to Order

Yes

Gift wrapping

Available

In My Big Sis Era Toddler T-Shirt, Retro Big Sis Shirt, Big Sister Toddler Shirt, Cute Big Sis Kids Shirt, Cute Big Sister T Shirt

♥ Welcome to UniStore Kids! ♥

ONESIES® Brand trademark is owned by Gerber Childrenswear LLC.

Our goal is to bring you the cutest and trendiest designs on the highest quality apparels. All of our products are designed, printed, pressed, and shipped on the next business day.

♥ Things to know about our products ♥

- Each item is handmade to order!
- We carry several different brands including Gerber Premium, Bella Canvas, Rabbit Skins, and Gildan.
- Machine wash cold, tumble dry low. To preserve the print for longer, wash inside out.
- For personalized designs - enter customization in the “Add your personalization” field.
- Orders ship next business day.
- If you are on a deadline please upgrade to Priority Mail Express at checkout.

♥ Size Charts ♥

✰ Onesies® Brand SIZE CHART ✰
0-3 Months :: 21-24 in. / 8-12 Ibs.
3-6 Months :: 24-26 in. / 12-16 Ibs.
6-9 Months :: 26-28 in. / 16-20 Ibs.
12 Months :: 28-30 in. / 20-24 Ibs.
18 Months :: 30-32 in. / 24-28 Ibs.

✰ TODDLER SIZE CHART ✰
18 M :: 30-32 in. / 24-28 Ibs.
24M / 2T :: 32-34 in. / 28-32 Ibs.
3T :: 34-38 in. / 32-35 Ibs.
4T :: 38-40 in. / 35-39 Ibs.
5T :: 40-44 in. / 39-43 Ibs.

✰ YOUTH SIZE CHART ✰
6-8 Small :: 20 7/8 in. long / 15 1/4 in. wide
10-12 Medium :: 22 1/8 in. long / 16 1/4 in. wide
14-16 Large :: 23 3/8 in. long / 17 1/4 in. wide

♥ Quick Sizing Tip ♥

Gerber Onesie® brand is used for onesies®.
Bella Canvas and Gildan brands are used for youth t-shirts.
Bella Canvas, Gildan, and Rabbit Skins brands are used for toddler t-shirts.
Bella Canvas and Gildan brands are used for adult t-shirts.
Gildan brand is used for youth sweatshirts.
Rabbit Skins brand is used for toddler sweatshirts.
Youth and toddler t-shirts, onesies®, and sweatshirts are true to size. Since body measurements vary depending on muscle structure and height, we recommend that you pay attention to the size charts listed at the last couple of slides of the listing when purchasing.

♥ How To Order ♥

1️) Please review all the information provided below before placing an order.
2️) Select the product type and size.
3️) Select the color of the product using the following options.
4) Select your design (Personalization Box) if applicable.
5) Need more items? Add your current item to your cart and if you would like to add more items to your order, please click the back button and repeat steps 1-4.
6) Once all your desired items are in your cart you may complete your order by entering your payment method and desired shipping address and click submit.

** Please note that we process simple custom orders within 1 day. We process very special, completely redesigned orders within 1-3 days. All our products are MADE TO ORDER. Contact us if you have any questions!

** CAN’T FIND THE ANSWER TO YOUR QUESTION?

If you cannot find the answer to your question, please send us a message. We strive to reply immediately and will do everything we can to accommodate your requests.
►You can send a message for more information. We write via ETSY messaging to keep good records, so please check your ETSY inbox frequently.

♥ Materials ♥

All Onesies® Brand are interlocking knit 100% cotton and CPSIA COMPLIANT. Shirts are cotton or cotton tri-blend depending on the brand used. Sweatshirts are cotton and polyester blend depending on the brand used. Please contact us if you have any further questions about fabrics.

Learn more about CPSIA standards at https://www.cpsc.gov/Regulations-Laws--Standards/Statutes/The-Consumer-Product-Safety-Improvement-Act/.

♥ Production Time And Shipping ♥

- Our order processing time is 1 day.
- During holidays please expect delays as the number of orders are slightly higher than usual, although we will do our best to get your order to you as soon as possible.

♥ Shipping Time ♥

- After we ship your order, shipping time is based on your shipping choice.
- First Class shipping will take 2-5 business days.
- Priority shipping will take 1-3 business days.
- Need your order really fast? Please contact us to see the expedited shipping options.

♥ Care Instructions ♥

- Machine wash: warm (max 40 °C or 105 °F); Non-chlorine: bleach as needed; Tumble dry: medium heat; Please iron inside out; Do not dry clean.
- Wash items inside out in cold water, do not bleach, do not dry clean, and do not iron directly on the design.

♥ Returns ♥

All items are made-to-order so unfortunately, we cannot accept returns or exchanges unless the shirt arrives damaged or defective.

ONESIES® Brand trademark is owned by Gerber Childrenswear LLC.

View full item details

What buyers say

4.8 (7)

“Will definitely be buying from them again”

Korisa

19 days ago

View all item reviews

NowPrice:$8.87+

Original Price: $19.72+

55% off

•

Sale ends in 3 days

Shipping & return policies

  • Order today to get by Jul 25-28
  • Returns & exchanges not accepted
  • Ships from: Mckinney, TX
  • Cost to ship: $5.98
  • Deliver to United States, 43215

    There was a problem calculating your shipping. Please try again.

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Star Seller

This seller consistently earned 5-star reviews, shipped on time, and replied quickly to any messages they received.

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Reviews for this item

4.8

We calculate this number using a recency-weighted average of all ratings, with a rating's value decreasing by half each year to best reflect the current experience.

(7 reviews)

4.8 Item quality
5.0 Shipping
4.4 Customer service
80% Buyers recommend
Filter by category
5 out of 5 stars 5

Korisa Jul 3, 2026

Will definitely be buying from them again

Korisa Jul 3, 2026

5 out of 5 stars 5

Brittany Feb 24, 2026

This shirt is super soft and true to size. I love it! It's super cute.

Brittany Feb 24, 2026

5 out of 5 stars 5

Kendra Sep 19, 2025

T-shirt is good quality, cute and came fast

Kendra Sep 19, 2025

5 out of 5 stars 5

Carina Aug 30, 2024

Great shirt! My daughter looks so cute in it.

Carina Aug 30, 2024

Meet your seller

UniStoreCollection
UniStoreCollection
UniStoreCollection ·

Texas City, Texas

We calculate this number using a recency-weighted average of all ratings, with a rating's value decreasing by half each year to best reflect the current experience. 4.8
·
85.1k sales
·
5 years on Etsy

Usually responds in a few hours

Smooth shipping Has a history of shipping on time with tracking.

Speedy replies Has a history of replying to messages quickly.

Rave reviews Average review rating is 4.8 or higher.

View shop registration details

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