How to Sew Stretchy Pajama Pants

DIY tutorial for knit fabric pajama pants for kids and babies

Hey y’all, we’re back with part 2 of this pajama set today showing how to sew stretchy pajama pants for kids and babies. These close fitting pants are very similar to leggings with cuffs on the bottoms. They’re also great as another layer under jeans when it’s really cold. See how I made the raglan style tops last week in this post.

Supplies for the whole pajama set, including the top, are listed below.

• 1 1/2 yards of knit fabric. Because this is so fitted, you want to make sure that the fabric has 4 way stretch; this is part of why the Riley Blake knits are perfect since they have 4 way stretch and 5% spandex.
• 1/4 yard of rib knit fabric for the cuffs and neckband  – fabric should have at least 80% stretch for the neckline (that means you can stretch a 10 inch piece to 18 inches). You could use the same fabric as the body IF it has good stretch and recovery.
• 19 inches of 1 inch wide elastic
• The pattern (see below)

The free pattern is in size 4T. If you need to make the pattern bigger or smaller, check out this post. To get it, click your preferred option below to get the free pattern only as a newsletter subscriber, or you can buy the full digital pattern in sizes 18M through 8 using the button below.

Please note that all my free patterns are licensed for personal use only (no selling items made from this unless you purchase it) and by downloading you are agreeing to this license.

To sew up these fitted pajama pants, check out the video below. You can also watch how to sew knit pajama pants on YouTube here if you prefer or if it won’t load below for some reason. If you prefer written instructions, check out this post to see how to sew the whole pajama set.

Hopefully your stretchy pajama pants make the kids you sew them for as happy as these two matching sisters!