Two 7.5 inch tall Blue I'm Three Party Hat. The hat opening has a 6 inch diameter. This fabric covered, thick felt first birthday hat features a trendy madras pattern, a felt number 3, fluffy pompoms, and a comfortable elastic chin strap. Dress your little fellow in style with this adorable Blue I'm Three Party Hat. The decorative stitching and cute little pompoms make this little topper perfect for wearing for birthday portraits, and of course for the Big Event. We understand how important your baby's birthday is to you. Take a look at all of our boutique-style outfits and accessories, and let us help you put together a stylishly classic 3rd Birthday party for your little man.