Acute Baby Onesie

Some of our best friends from college are expecting their first baby, and we are so excited for them! The mom is a math professor and the dad loves dumb dad jokes, so I decided to combine the two to create the perfect onesie for their baby: the acute baby onesie! Get it?! 🙂 They’re super simple to make, or you can find them for sale in my shop with black, pink, or blue words if you don’t want to make one yourself!

Acute baby onesie

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If you like this onesie, check out some of the other adorable baby onesie tutorials on this site!

Acute Baby Onesie

  • 15 minutes (time spent doing stuff)
  • 2 minutes (time spent waiting around)
  • 17 minutes (total project time)




I shared a detailed, step by step tutorial on how to use heat transfer vinyl earlier, so if you need a refresher on how to use HTV to make a onesie, check that post out. But here are the basics.

Start by opening up your design software. I created this design in the Cricut Design Space, but you can easily make it in Silhouette Studio if you have a Silhouette machine.

Add your images (in this case, I drew an acute angle using the line tool and the circle tool) and your words in whatever font you’d like. If you like the design I used, you can find the cut files in my shop!

Once your design looks the way you want it, send it to your machine to be cut. If you’re using a Silhouette machine, make sure you mirror the design first, before sending it to be cut. If you’re using a Cricut, you can click Go to send the design to the machine, then check the box that says “Mirror for Iron On” in the preview screen before you actually cut out the design.

When the machine finishes cutting your design, weed away any extra vinyl using a weeding tool (remember to pull out the centers of letters like “a”, “b”, and “e”). Then position your design on your onesie with the plastic backing side face up (the letters should read forward at this point).

If you’re using an iron, turn the iron on to the cotton setting, and once it’s hot, iron the design onto the onesie by pressing down firmly with the iron for 30-45 seconds. Don’t move the iron around; just press in one spot. If your graphic is larger than the plate of the iron, move the iron and press again in a second spot, repeating until the entire graphic is adhered.

If you’re using a heat press, place the onesie on the bottom plate and position the graphic on top. Set the heat press for 305 degrees F and press for 10 seconds.

And you’re done! You have an acute baby onesie!

Acute baby onesie

If you’d prefer to buy one of these (a)cuties, you can find them for sale in my shop in black, pink, and blue words. The onesies in my shop are 100% machine washable and dryer safe, plus each one is individually packaged with washing and drying instructions, so they’re easy to give as a gift!

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Jessi Wohlwend

I believe that anyone can do crafts and DIY projects, regardless of skill or experience. I love sharing simple craft ideas, step by step DIY project tutorials, cleaning hacks, and other tips and tricks all with one goal in mind: giving you the tools you need to “do it yourself”, complete fun projects, and make awesome things!

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Reader Interactions

  1. jean goodale says

    5 years ago

    Do you have to wash the onesie first? Is there much risk of shrinkage if it is 100% cotton? I hate to wash the outfit because it never looks as new – no matter how delicate a setting I use with my washer/dryer.

    • Jessi Wohlwend says

      5 years ago

      I always wash my onesies first just in case of shrinking, but also because if there is any residual dies or residue from the manufacturing process it can inhibit the vinyl from properly adhering and it could start to come loose in the wash down the road. After I wash them and press the vinyl onto them, I press the entire onesie a second time to get the seams and edges crisp and clean again and it usually looks ok.

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