Onesies or rompers make handy apparel options for infants every day, so it's no surprise that they make perfect costumes for Halloween and beyond. Costume onesies are also fun for photo shoots, family gatherings, and other holiday events. Prices vary per size in some of the costume onesie outfits in this collection. Remember that prices also fluctuate on Amazon -- the prices here were under $25 at the time of publication.
Your baby will be as soft as a plush teddy bear in this fuzzy cute animal onesie! The little bear costume has a bright green bowtie. This romper costume comes with matching booties.
This is a funny Halloween costume idea for your little one! The convict striped onesie includes sheer "tattoo" sleeves the make your baby look bad to the bone!
This fluffy pig suit for babies is so darling! Complete with an eared, snouted pink piggie hood.
This plush onesie is perfect with big lion feet and massive lion mane. Includes little mouse rattle to keep the thorns out of your little lion's feet.
This cute costume is perfect for your own little monster! This plush pink onesie comes with fuzzy feet and monster head with horns attached.
This is an adorable costume for your baby this Halloween or photo session. The cow costume includes tail, floppy ears, and small plush horns. The cute cow has a pink belly and big pink nose. So cute!
The officially licensed TMNT costume is shown here transforms your kiddo into Michealangelo! The costume is also available with a purple sash -- making your child's costume Donatello. Get them both for a fun twin costume idea!
This full polyester one-piece suit is perfect for Halloween and cute photo ops. The orange striped outfit is cartoonishly cute for your little tiger!
Your baby will be raging cute in this green muscle-print Incredible Hulk costume onesie. The romper outfit comes with an adorable Hulk beanie hat!
How cute is this fuzzy and whimsical unicorn costume romper for infants?! The hood features a smiling unicorn face and a plush pink striped unicorn horn.
Keep baby cozy and warm and super cute in this teddy bear costume onesie. This outfit is perfect for darling baby photo sessions or just wearing during cold winter nights. This is a comfortable polyester jumpsuit baby costume in one piece. The material has a fur feel and...
Inflatable costumes typically come with their own small battery-powered motors to keep their shape as they keep you comfortable. These full-body costumes extend around your body, making social distancing easier to remember (hugs are difficult). The costumes themselves offer no extra health protection but at least no one...
Just because the weather is heating up doesn't mean you can't have some cheeky costume fun. Hot sunny days call for sunglasses -- why not sport a pair of costume sunglasses to add some humor, shock, or fun to your day? Here are some fun novelty costume sunglasses...
Here's another fun themed costume idea for a group of friends or family -- how about going as a bunch of insects? Here are some costume ideas for bugging out this Halloween.
