Halloween Costumes to Rock That Baby Bump with Some DIY
Pregnant and wondering whether it’s worth the effort to dress up this year? Honestly, yes. A baby bump is basically a built in prop, and some of the best Halloween costumes out there only work because of it. You’ve got a shape most costumes are begging for, so lean into it rather than hide it under a baggy jumper.
The good news is you don’t need to spend much, or any, money. Most of the ideas below use things you probably already own: an old t-shirt, some fabric paint, a bit of string. Before you get stuck in, though, it’s worth thinking about comfort and safety first, because a costume that looks brilliant in photos but leaves you overheated, itchy or off balance isn’t much fun to actually wear for a whole evening.
A few things to think about before you pick a costume
Pregnancy changes how your body handles heat, balance and skin sensitivity, so a few sensible checks go a long way:
- Skip anything that restricts your bump. Tight waistbands, corsets or costumes that need to be pinned or taped snugly around your middle are best avoided, especially later in pregnancy.
- Watch the heels and the length of skirts or robes. Your centre of gravity shifts as your bump grows, so anything that makes tripping more likely (long trailing fabric, platform shoes, masks that block your side vision) is worth reconsidering.
- Check any paint or face paint is non-toxic and skin safe. Do a small patch test on your arm a day or two before, since pregnancy can make skin more reactive than usual. If you’re unsure about a product, ask your midwife, doctor or pharmacist, or just stick to costumes that don’t involve painting your bump at all.
- Think about temperature. Many pregnant women run warmer than usual, so layers you can peel off, or a costume made from breathable fabric, will keep you a lot more comfortable at a party or on a chilly trick or treat walk.
- Plan for bathroom breaks. Bladders and pregnancy don’t always get along. A costume you can get in and out of easily beats one with fifty tiny buttons down the back.
With that out of the way, here are some of our favourite bump friendly costume ideas, most of which you can put together at home.
Bun in the Oven
This one is a Halloween classic for a reason: it’s cheap, it’s funny, and it works even better as a couples costume. You wear an apron over a plain top, add oven mitts, and pin or tape a paper “timer” or oven door cutout over your bump. Your partner dresses as a chef, complete with hat, and the joke tells itself. If you want to push it further, add a wooden spoon prop or a “fresh bun” sign pinned just above your belly.

Construction Bump or Treasure Troll
If you’re pushed for time, both of these can be pulled together from things already in your wardrobe. For a construction themed bump, grab a hi-vis vest or checked shirt, a hard hat if you have one lying around, and write “under construction” across your belly in fabric marker or paint. It’s a simple, comfortable option that doesn’t need any special shopping.
The Treasure Troll route just needs a bright, fitted dress and a big, colourful wig, ideally in a shade that clashes wonderfully with everything else you own. It’s an easy costume to wear for hours since there’s nothing restrictive about it, which makes it a good pick if you’re going to be standing around at a party or walking the neighbourhood with older kids.


For more step by step ideas along these lines, Brit + Co have a good roundup of DIY maternity Halloween costumes with materials lists for each one, so it’s worth a browse if you want more inspiration.
Wrecking Ball
This one gets a laugh every time. Wrap a small doll in foil so it looks like a tiny wrecking ball, attach it to a length of chain (costume chain, not anything heavy or metal that could bang against you), and drape it over or around your bump. Pair it with plain clothes and you’ve got a costume that’s instantly recognisable without needing to spend anything.

Ball of Yarn
Genuinely one of the simplest costumes on this list. Wind a soft ball of yarn around your bump (a friend or partner will make this much easier than trying to do it solo), tuck in a couple of knitting needles as props, and you’re done. It costs next to nothing and there’s zero risk of anything digging in or feeling tight, which makes it a comfortable choice if you’re further along in pregnancy.
Painting the bump
Belly painting has become a popular way to mark a pregnancy at Halloween, and it can look brilliant in photos. Pumpkins, watermelons, footballs, even a cracked “Humpty Dumpty” design all work well on a round bump. If you want to try it:
- Use paint that’s specifically labelled as body paint or face paint, and check it’s non-toxic. Regular craft or acrylic paint isn’t designed for skin and can irritate it.
- Patch test a small area first, ideally a day or two before, especially if your skin has been more sensitive than usual during pregnancy.
- Avoid painting over stretch marks or any skin that’s already irritated or broken.
- If you’re at all unsure, ask your midwife or GP, or just admire other people’s belly art from a safe distance and pick a different costume instead.
Where to find more ideas
If none of these quite fit your style, it’s worth browsing Pinterest for more inspiration. There’s a huge amount of creativity out there when it comes to dressing up a bump, from clever puns to full glam looks. Just keep the same basics in mind whatever you choose: nothing tight around your middle, nothing that makes walking or standing awkward, and nothing on your skin you haven’t checked is safe to use during pregnancy.
Which costume would you actually wear? Let us know in the comments, we always love seeing what parents come up with.
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