"Proud Sister Of A Dumbass Brother" Sarcastic Graphic Tee // Duo product image (1)
"Proud Sister Of A Dumbass Brother" Sarcastic Graphic Tee // Duo product image (2)
"Proud Sister Of A Dumbass Brother" Sarcastic Graphic Tee // Duo product image (3)
"Proud Sister Of A Dumbass Brother" Sarcastic Graphic Tee // Duo product image (4)
"Proud Sister Of A Dumbass Brother" Sarcastic Graphic Tee // Duo product image (5)
"Proud Sister Of A Dumbass Brother" Sarcastic Graphic Tee // Duo product image (1)
"Proud Sister Of A Dumbass Brother" Sarcastic Graphic Tee // Duo product image (2)
"Proud Sister Of A Dumbass Brother" Sarcastic Graphic Tee // Duo product image (3)
"Proud Sister Of A Dumbass Brother" Sarcastic Graphic Tee // Duo product image (4)
"Proud Sister Of A Dumbass Brother" Sarcastic Graphic Tee // Duo product image (5)

"Proud Sister Of A Dumbass Brother" Sarcastic Graphic Tee // Duo

¥4,866 ¥4,379 JPY

The ultimate uniform for sibling rivalry.

Let’s be honest: you didn't choose your family, but you can choose to publicly humiliate them. The "Proud Sibling" Graphic Tee Series is the ultimate, unapologetic tribute to the chaotic bond only a brother and sister can share.

Whether you’re buying this to wear proudly at the next family dinner, gifting it to your sibling to state the absolute facts, or wearing them together as the most unhinged matching set photo-op ever created, these tees deliver premium comedy. It features a clean, structural design paired with maximum disrespect—the perfect way to say "you're an idiot, but I love you."

Pro-Tip: Add both to your cart, force your sibling to wear theirs, and take a family photo to secure your spot as the favorite child forever.

Designed by vibecheck.lab
Wearable Irony. Engineered for the Algorithm. Lab-Certified Aesthetic.

Select color: White

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Select size

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SPECS & Highlights

  • The Ultimate Call-Out: Choose between the "Proud Brother" or "Proud Sister" options to perfectly target your sibling's daily performance.

  • Premium Everyday Comfort: Cut from 100% premium combed and ring-spun cotton for an ultra-soft, breathable feel that survives family gatherings and sibling wrestling matches.

  • Clean Streetwear Aesthetic: Bold, minimalist typography that bridges the gap between chaotic family memes and sharp, high-fidelity apparel architecture.

  • The Perfect Birthday or Holiday Gift: The absolute best gift for your brother or sister if your relationship is built entirely on roasting each other.

Size & Fit

View size chart

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.

"Proud Sister Of A Dumbass Brother" Sarcastic Graphic Tee // Duo Size Guide

Size guide preview
Size label Length Width Sleeve length
S
26.62
18.25
16.25
M
28
20.25
17.75
L
29.37
22
19
XL
30.75
24
20 1/2
2XL
31.62
26
21.75
3XL
32 1/2
27.75
23.25
4XL
33 1/2
29.75
24.63

Dimensions are supplied by the manufacturers. Variations in product dimensions may occur and could be up to 2 inches (5 cm).

Helpful hint! Take the dimensions of an item you own and use it as a benchmark against the sizes listed in this guide.

A Length

Set the starting point of the tape measure at the base of the collar on the top edge of the item (at the high point shoulder). Extend the tape to the bottom edge of the garment.

B Width

Position the tape measure's starting point at the seam beneath the sleeve and extend it across the item to the seam under the opposite sleeve.

C Sleeve length

Start measuring from the top of the shoulder seam, continue along the arm to the end of the sleeve.

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