Pin It Vintage Printable, inverted it, printed it on an iron-on transfer, and ironed it onto a onesie. It takes just minutes to make and it's so cute! I'm selling it in my Etsy shop here if you'd like to order one for $10.
Want to make one yourself? Here's an inverted image for you. To make one: copy
the image, insert into a Microsoft Word document, resize (right click, format
picture, size) to be as big as you want (mine is 5"), then print onto iron-on
transfer sheet. Follow your iron-on directions to apply to a onesie. Mine
require a water-free iron, set on the cotton setting, applied for 30 seconds,
moving the iron back and forth.
Let me know if you make one! Happy crafting!