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Design, Invent, Print!

21st Birthday T Shirt Gift


Design, Invent, Print! is proud to present our classic 21st birthday, 1998 'Square Root 441' design on this great looking 100% cotton women’s v-neck.

The 21st birthday, vintage t-shirt design is currently a very popular 21st birthday present for those about to hit their 21st birthday!

If you require a different birthday design or birth year please check the Women's Birthday Shirt section of our store:


Fabric: 100% ringspun combed cotton
Weight: 185g

SIZING: (Inches)

Size: S
Size 8-10

Size: M
Size 10-12

Size: L
Size 12-14

Size: XL
Size 14-16

Size: 2XL
Size 16-18



- 185g
- 100% ringspun combed cotton
- Semi-fitted style with side seams
- Mitred V neck
Taped neck and shoulders
Satin label
Twin needle sleeves and hem

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