How to sew simple baby sweatpants / baby leggings RABBIT with round crotch

Today I have the simplest pattern for baby sweatpants / leggings in the world for you. They have round crotch and no crotch seams, so they are suitable for babies and small children. Sweatpants with round crotch are great both for babies who are already walking, and for those who are not walking yet. The pattern is especially suitable for children who are still wearing diapers or non-walking diaper-free children. It’s also fine for kids who are able to walk and no longer wear diapers, but for practical reasons I would choose a different pattern for these children. I’ve made two versions of this pattern – one for use with cloth diapers and second for use with disposable diapers (this one is also suitable for diaper-free children).

How to sew simple baby sweatpants / leggings with round crotch

Sewing procedure is very simple, so I can recommend this pattern to beginners. If you want to get into sewing, this could be a great starting project. You can get the pattern for baby sweatpants / leggings with round crotch here:

Pattern – Simple baby sweatpants / leggings RABBIT with round crotch – version for use with disposable diapers

How to sew simple baby sweatpants / leggings with round crotch

Pattern – Simple baby sweatpants / leggings RABBIT with round crotch – version for use with cloth diapers

How to sew simple baby sweatpants / leggings with round crotch

Both pattern versions are designed to accommodate diapers (choose based on type of the diaper you use), so the sweatpants won’t be too tight. They get narrower around calves and ankles. Waist is finished with thin and soft (knitted) elastic waistband. You can also get both pattern versions as bundle if you want to:

Pattern bundle – Simple baby sweatpants / leggings RABBIT with round crotch – both versions (cloth / disposable diapers)

How to sew simple baby sweatpants / leggings with round crotch

Recommended material

This pattern works best with thin and medium knits (elastic materials – elastic cotton knits, French Terry, Ponte Roma, Punto di Prada, thin uncombed tracksuit fabric with elastane…). You can use materials of different densities (weights), but I would not go over 240g / m2. In any case, there should be elastic fibers in your material (elastane, lycra, etc.).

I’ve bought fabrics for my baby patterns collection at Dumlatek.cz. All of them are cotton knits. You can take a look at this particular fabric (with white drops on petrol or fuchsia) here: Knit with drops – petrol and here: Knit with drops – fuchsia.

Required amount of material

(for 140 cm wide fabric)

  • Sizes 50 – 68: 50 cm
  • Sizes 72 – 86: 60 cm

Size chart

  • (NB = Newborn)
  • The size of the pattern for babies and small children should be chosen according to their height.

Babies & Toddlers

measurements are in centimeters (without diapers)

SizeNB – 50566268748086
Heightup to 5051 – 5657 – 6263 – 6869 – 7475 – 8081 – 86
Chest42444546485052
Waist (Belly)45464748495052
Hips46485052545556

How to sew simple baby sweatpants / baby leggings

My tip:

I’ve used an overlock, but if you only have a regular sewing machine, then it doesn’t matter at all. These simple sweatpants with round crotch can easily be sewn on a regular sewing machine. Just follow simple rules described in this article:

Sewing knits (and other elastic fabrics) on regular sewing machine – 4 steps to success

How to sew simple baby sweatpants / leggings with round crotch

Cuts preparation

Prepare 1x front piece (folded fabric cut) and 1x back piece (also folded fabric cut). Seam allowances are 1 cm wide and seam tabs (bottom edges of the legs and waist) are 3 cm wide.

How to sew simple baby sweatpants / leggings with round crotch

Sewing

Lay front piece over the back piece (face side to face side).

How to sew simple baby sweatpants / leggings with round crotch

Take care to align edges of the waist seam tabs precisely…

How to sew simple baby sweatpants / leggings with round crotch

…this will prevent waistline from getting skewed.

How to sew simple baby sweatpants / leggings with round crotch

Sew both side seams with flexible stitch.

How to sew simple baby sweatpants / leggings with round crotch

Then clean seam tabs of the legs and fold them to the reverse side. Press the seam allowances of the side seams towards the back piece.

How to sew simple baby sweatpants / leggings with round crotch
How to sew simple baby sweatpants / leggings with round crotch

Sew through the seam tab (from the face side) with elastic stitch. I’ve used 3-step zigzag to do this.

How to sew simple baby sweatpants / leggings with round crotch

Overlay the pieces again. Front piece rests on the back piece (face side to face side). Pin the instep seam.

How to sew simple baby sweatpants / leggings with round crotch

And sew it. Pull free ends of the thread chain under the loops when sewing on overlock.

How to sew simple baby sweatpants / leggings with round crotch
How to sew simple baby sweatpants / leggings with round crotch

Clean cutting edge of the waist seam tab. And again – pull free ends of thread chain under the loops.

How to sew simple baby sweatpants / leggings with round crotch

Fold the seam tab (3 cm) to the reverse side and pin it there.

How to sew simple baby sweatpants / leggings with round crotch
How to sew simple baby sweatpants / leggings with round crotch

Sew through the tab from the face side of the sweatpants to create the tunnel for the waistband.

How to sew simple baby sweatpants / leggings with round crotch

Do not sew along the entire circumference – leave a small opening in the back piece near one of the side seams, so you can insert the waistband through here.

How to sew simple baby sweatpants / leggings with round crotch

I recommend using knitted elastic band, it’s very soft and therefore suitable for baby clothes.

How to sew simple baby sweatpants / leggings with round crotch

You can now close the opening of the tunnel. Alternatively, leave it open (if it is only small) so you can easily adjust the elastic band as your baby grows.

How to sew simple baby sweatpants / leggings with round crotch

And that’s it! You can buy patterns for simple baby sweatpants here:

Pattern – Simple baby sweatpants / leggings RABBIT with round crotch – version for use with disposable diapers

Pattern – Simple baby sweatpants / leggings RABBIT with round crotch – version for use with cloth diapers

Pattern bundle – Simple baby sweatpants / leggings RABBIT with round crotch – both versions (cloth / disposable diapers)

Have a nice day, Peťa

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