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Ocean Theme Birthday Shirt: "One-der the Sea" First Birthday Outfit, Matching Family Beach Party T-Shirt

Price:$14.25+

Original Price: $19.00+

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25% off

•

Limited time sale

IVFBoutique  
Arrives soon! Get it by Nov 14-23 if you order today
Nov 14-23

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  • Please enter the name you would like on the design. Text will appear in all lower case.
    Ex: mama, daddy, one, etc

    *Infant/Toddler shirts are a different brand than adults & colors do not match exactly. Please reach out with questions.

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

Highlights

Celebrate your little one’s special day with this adorable under the sea birthday shirt! Perfect for a 1st birthday outfit or 2nd birthday outfit, this design is ideal for a one-der the sea celebration or any ocean theme birthday party.

Whether you're planning a sea birthday party, under the sea party, or beach theme birthday, this shirt makes the perfect outfit for your child—and we also offer custom family shirts for a fun family matching look!

Featuring cute sea animals and coastal vibes, this ocean birthday shirt is great for photos, cake smash sessions, and memorable celebrations.

Perfect for:
First birthday / second birthday outfits
Ocean theme birthday parties
Sea animals birthday themes
Beach theme birthday celebrations
Matching family outfits
Under the sea party events

Make your celebration unforgettable with this charming and customizable birthday shirt!

--- How to Order Your Custom Design Shirt ---
• Select your size
• Select your color
• Enter personalization

--- TSHIRT DESIGN & MATERIAL ---
• Designed for style, comfort, and sustainability.
• It’s knit in one piece to minimize fabric waste and features a durable elastic ribbed collar that retains its shape.
• T-Shirts are made using 100% US cotton that is ethically grown and harvested.
• Ethically crafted using 100% US-grown cotton, it combines durability with eco-conscious design.
• Designs are made with a heat press.

--- CARE INSTRUCTIONS ---
• Machine wash cold, inside-out, gentle cycle with mild detergent and similar colors.
• Use non-chlorine bleach, only when necessary. No fabric softeners.
• Tumble dry low, or hang-dry for the longest life.
• Cool iron inside-out if necessary. Do not iron decoration.
• Do not dry clean.

--- REFUNDS/RETURNS ---
• Due to shirts being made to order, I do not accept returns or refunds.
• But please contact me if you have any problems with your order.
• I will do my best to resolve the issue!


--- ADDITIONAL INFORMATION ---
*Please check the color charts for the size and type of the shirt you want, not every color is available for each type of shirt, drop down comes automatically with every color but they are not available for each item, so please make sure to check it. If you do not check the color charts the closest item will be sent to you.
*If you want to add or change anything on the existing design that is shown in the display picture, please message me first to ask if the changes and additional request can be done or not. If you do not ask and request for it without asking in the order we will ship the item as it is without the requests done.
*If you enter the wrong address with your order, I will try to help you if you message me from the message box only if the item has not been made and processed to the packaging level to ship the item.
*Messages will be answered during my business hours 9am-5pm PT, Monday through Friday.
* I use multiple shirt brands. If you would like a specific brand, please message me for availability. Otherwise I will ship the available brand.

If you have any other questions, I would be happy to assist. Please message me.

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  • Order today to get by Nov 14-23
  • Returns & exchanges not accepted
  • Cost to ship: $5.99
  • Ships from: San Jose, CA

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IVFBoutique
IVFBoutique ·

San Jose, California

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. 4.9
·
2.4k sales
·
1.5 years on Etsy
Karen
2 shop members

Typically responds within a few hours

Typically responds within 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.

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Listed on Oct 25, 2026