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.
These funny flip-up shirts have a question printed on the front. The sentiment invites a question, the answer to which is printed on the inside of the shirt. Wait, what? The bellies of these funny shirts are meant to be flipped up over the head of the wearer...
Star Wars costumes sales are starting to skyrocket to the top of everyone's Halloween lists this year. Earlier we highlighted a great complete Luke Skywalker outfit for boys. Here are some more great Star Wars-related costume ideas for all sci-fi-loving kids. These costumes are all inspired by the upcoming sequel The Force Awakens.
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...
