KCWC 2011: Boy’s undies from recycled T-shirts

Before & After

It’s kids clothes week spring 2011! I’m starting it by refashioning Sidra’s T-shirts into undies. Those shirts are still in good condition but all of them have become too small now. It is something that you always encounter when you have kids.

I copied one of Sidra’s undies to make the base pattern. Then I made a pair of test undies from old T-shirt so Sidra can tell me what he wanted to change. Yes, I made a muslin for recycled undies…. He wanted his undies to be a bit longer and not too tight around the bum, so I altered the pattern accordingly.

The original undies actually doesn’t have those side strips, the front and back pattern are in one piece. But the T-shirts were too small for this, so I added the side strips to the pattern. I think it looks even better, kinda like cycling shorts. As usual, I only use ordinary sewing machine to make them. I used zigzag stitch set on 0.5-1 on width and 3 on length. It works perfectly!

The black elastics were recycled from my husband’s underwear, while the white with blue stripes ones were found in a tiny fabric store near my house for about 1US$ for 2 m. It is such a cute little store, selling fabrics and sewing notions who are mostly out of print and only in small quantity. The racks were dusty and some of the fabric look like they’ve been there forever. For some reason, there were two racks for household supplies like spoons and forks, nail cutters, plastic combs, erasers, etc. The owners are an old couple who loves to chat, even when they know I don’t understand Japanese. They just keep talking and I keep nodding and smiling (^_^;)

Anyway, I showed the undies to Sidra when he came back from school. He loves them and wear the blue one right away! Now that he’s out of T-shirts, I think I need to make some T-shirts for him.

Boy Boy

Boy Boy


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  • Lucha

    I love this idea! As the mother of 4 boys, I have tons of t-shirts, and i will be making lots of undies! Thanks for this!

  • Robin

    I want a pair of those!!!! Amazing job as usual, you are such a sewing inspiration! Everytime I read your blog I walk away with my head spinning with ideas! Much aloha and mahalos!

  • You are truly amazing!

  • clever idea <3

  • So Clever of you!

  • Awwww, cute little Sidra! What a smart idea for making use of outgrown clothing.

  • Lia

    aiiihhh sooo cute 🙂

  • brilliant, looks great!

  • This is one I want to take on- not kids’ underwear, but for myself. What a good use for those old t-shirts though! Might recycle some of mine the same way! I’d never thought of using them for this.

  • awesome. I’m so impressed!

  • Sidra has the coolest undies on the planet!

  • Cute undies and a great use for old t-shirts.

  • Pam

    Wow…they’re so cute!! That’s amazing!!! I wish I could sew like you!

  • I have just been flipping through an older issue of Ottobre and there is a pattern for undies. Seeing how beautiful Sidra’s have turned out I might as well use some of my son’s tees to make him some undies! Thanks for the idea!

  • lisa deering

    Wonderful! Now can I make some for me? I am 59 years young and love the idea of undies as comfortable as bike shorts. What do you think? I wonder whose undies I can cut up for a pattern:)

  • You must really be the cleverest momma in the whole world. That is a great refashion!

  • These are so cute! I’m thinking of making some larger ones for my husband, thanks for the inspiration 🙂

  • Kim

    Those are great, very cute and comfy! Recycled undies are on my to-do list this week as well.

  • Brilliant idea for old t-shirts!

  • awesome! what a fun project. I may have to try making some for my husby 🙂

  • Those are SO cute. Looks like you did a great job!
    I just found your blog the other night and I like it 🙂

  • GuauuuU!!! this is ecodesign!! jajajajaja
    Great blog!! I love your work!!
    ♥ Kisses

  • These are just too adorable! Great way to recycle t-shirts.

  • He’s so cute posing for you. I really admire the way you upcycled clothes for your family! The environment thank you!!!

  • wow, so adorable! and such a great use for those out grown shirts.