Baby Bottoms Buying Guide: Bloomers, Bottoms and More

Quick answer

Buy fewer baby bottoms than you think, but buy them in two size bands: one that fits now and one slightly larger for growth. Prioritize soft, stretchy waistbands, easy diaper access, and fabrics that survive frequent washing. For newborn bottoms essentials, start with 6–8 everyday pieces and add bloomers or dressy bottoms only if your routine actually calls for them.

Baby bottoms are the hardest-working part of a baby's wardrobe and the easiest to overbuy. Between diaper changes, spit-up, and growth spurts, most parents reach for the same three or four pieces on repeat. This baby bottoms buying guide walks through bloomers, pants, sizes, and newborn essentials so you can build a drawer that works instead of one that just looks cute.

You will not find a single 'best baby bottoms' pick here, because the right choice depends on how you diaper, how often you do laundry, and what season you are dressing for. Instead, use the decision rules below to match fabric, fit, and style to your actual week.

Start with function: diaper access, waistband, and fabric

The three features that determine whether a baby bottom gets worn are diaper access, waistband comfort, and fabric recovery. A wide, soft, stretchy waistband that sits below the belly is gentler on newborns and easier to pull down in a hurry. Avoid tight elastic or bulky knots at the front. If you use cloth diapers, size up in the seat to avoid compression leaks.

Fabric matters more than style for everyday bottoms. Look for cotton with a small amount of elastane for stretch, or Tencel Modal for softness and temperature regulation. Plant-based dyes, like those used in some NICO pieces, can vary slightly between batches, so do not expect a perfect colour match across a multi-pack. That is normal, not a defect.

• Check that the waistband stretches over a diaper without leaving red marks.
• Choose bottoms with a roomy seat if you use cloth diapers or thick overnight inserts.
• Wash new bottoms once before wearing to check for shrinkage and colour transfer.

Bloomers vs pants vs leggings: what each is actually for

Bloomers are short, gathered bottoms that work well over a onesie or under a dress in warm weather. They give coverage without bulk and make diaper checks fast. Pants and leggings offer more warmth and are better for crawling, but they need enough stretch to move with the baby rather than restrict them. For newborns, soft pull-on pants with a folded waistband are easier than anything with snaps or buttons.

If you are building a baby bloomers guide for yourself, think in outfits rather than pieces. Two bloomers plus three onesies can cover a week of warm-weather changes. For cooler months, three leggings plus four bodysuits will do more work than a drawer full of specialty bottoms.

• Warm weather: bloomers and short bottoms over bodysuits.
• Cool weather: leggings or soft pants with a bodysuit and socks.
• Crawling and cruising: stretchy leggings with reinforced knees if available.

How to choose baby bottoms sizes without guessing

Baby bottoms sizes are usually based on weight and height, not age, and brands vary. Always check the specific size chart for the product you are buying rather than assuming a 3–6 month label fits your baby. If your baby is between sizes, size up for bottoms before tops, because a slightly loose waistband is more comfortable than a tight one over a diaper.

Buy a small number of each size in advance. Newborn size is often outgrown in weeks, so two or three pieces are usually enough. Focus your budget on the 3–6 and 6–12 month ranges, where babies tend to stay in a size longer. If a product does not list a size chart, treat that as a limitation and measure a bottom that already fits your baby, then compare flat measurements.

• Measure waist, rise, and inseam on a bottom that fits well now.
• Compare those numbers to the product's flat measurements, not the tag size.
• When in doubt between two sizes, choose the larger for bottoms.

How many baby bottoms do you actually need?

For a newborn, 6–8 everyday bottoms is a realistic starting point if you do laundry every two to three days. That covers diaper leaks, spit-up, and the occasional blowout without an overflowing drawer. If you use cloth diapers or have a baby who spits up often, aim for 10–12. Add one or two dressy bloomers only if you have events or photos coming up.

As babies get older and more mobile, you will need fewer pieces per size because they stay in each size longer, but you will want more durable options. Rotate out anything that has lost its stretch or developed rough elastic. A bottom that leaves marks is not worth keeping, no matter how cute it is.

• Newborn: 6–8 everyday bottoms, 1–2 dressy bloomers.
• 3–12 months: 8–10 bottoms per size if laundry is infrequent.
• Keep a small 'emergency' pouch in your diaper bag with one spare bottom.

Fabric and care trade-offs to know before you buy

Softness and durability pull in different directions. Tencel Modal is exceptionally soft and breathable, but it can pill if washed with rough fabrics or dried on high heat. Organic cotton with a little elastane holds up well and is easy to care for, but may feel less silky at first. Plant-based dyes, like those used in some NICO pieces, can shift slightly in colour between batches, so buy multiples at the same time if matching matters to you.

Wash baby bottoms inside out in cold water and skip the dryer when you can. Heat is the main cause of shrinking waistbands and fading dyes. If a product is final sale, check the care label and return policy before buying, because you cannot exchange it later if the fit or fabric does not work for your baby.

• Cold wash, low spin, and air dry to protect stretch and colour.
• Avoid fabric softener, which can reduce absorbency and leave residue.
• Buy final-sale bottoms only when you are confident about the size.

Decision rules for buying baby bottoms

• If you use cloth diapers: Size up in the seat and choose bottoms with a roomy cut and stretchy waistband. Avoid slim leggings that compress the diaper. Check the rise measurement, not just the waist.
• If your baby is between sizes: Buy the larger size in bottoms and the smaller size in tops. Bottoms need extra room for diapers and movement. A slightly loose waistband is safer than a tight one.
• If you want the fewest pieces possible: Choose one neutral colour family and buy 6–8 bottoms in the current size plus 4–6 in the next size up. Fewer, better-fitting pieces get worn more often.
• If you are shopping final sale: Confirm the size chart and fabric care first. Final sale items cannot be returned, so a wrong size becomes a sunk cost. Only buy final sale when you already know the fit.
• If softness is your priority: Look for Tencel Modal or organic cotton with a small amount of elastane, and wash cold to keep the hand feel. Soft fabrics need gentler care to stay soft.

Product facts that help you decide

• 3 Pack of Baby Singlets: Pack includes 3 baby singlets in your choice of colour. Boxy tank style singlet with extended, vintage rib crew neck. Roomy fit. A roomy singlet layers easily under bloomers and pants without adding bulk at the waist, which keeps diaper changes quick.
• Kids Tee: Boxy fit tee with a vintage style ribbing at the neck and a cap sleeve. Crafted in NICO's classic GOTS certified cotton. 95% organic cotton, 5% elastane. The cotton-elastane blend gives gentle stretch for movement, and the boxy cut pairs well with bloomers or leggings for everyday wear.
• Last Chance Ramona Tee Bodysuit: The Ramona collection offers the softness and sophistication of Tencel Modal in uncomplicated, minimalist apparel, cut for the perfect fit. Our Ramona Tee Bodysuit gives you the perfect 'tucked in tee' look for a smooth, uncomplicated profile that moves with your body. Last Chance sale items are final sale and cannot be returned. A tucked-in bodysuit stays smooth under bottoms and prevents ride-up, but the final-sale policy means you should confirm sizing before buying.

Who these recommendations are for

Best for

• Parents building a practical newborn bottoms essentials drawer
• Caregivers who want bloomers and pants that work with frequent diaper changes
• Shoppers who prefer soft, breathable fabrics like organic cotton or Tencel Modal

Not for

• Shoppers looking for structured or formal baby bottoms with buttons and zips
• Parents who need a specific size chart for a product that does not list one
• Anyone who wants a single 'best baby bottoms' pick without considering fit and routine

Build your baby bottoms drawer around fit and function first, then add bloomers or dressy pieces only when your routine calls for them. Start with 6–8 everyday bottoms in the current size, size up when between sizes, and treat final-sale items as keepers only when you are sure about the fit.