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• • • • •
Time
1h30

Make a cute bubble romper in ANY baby or small child size!
This sweet & comfy outfit is just what the little ones need for keeping cool now that the heat's turned up outside. It's got a flexible fit, can be made from woven or knit, is easy to get on & off, and uses little fabric, so it's very economical.

Posted by Cheryl@Sew Can Do from Farmington Hills, Michigan, United States • Published See Cheryl@Sew Can Do's 13 projects »
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  • How to sew a romper. Easy Any Size Baby Bubble Romper - Step 1
    Step 1

    start by making a handy paper pattern.

    You'll need the following measurements (use measuring tape):

    - Chest
    - Length from shoulder to crotch
    - Thigh diameter
    - Shoulder width (measure from one across to the other)

    To determine the top bodice width, divide the chest in this in half + 2 inches.
    My 4.5 month old was 16in so the top bodice width was 10in.

    To determine the full romper length + 4 inches to the shoulder to crotch length.
    My 4.5 month old was 14in so the full romper length was 18in.

    Take paper and measure out a rectangle that is the bodice width and romper height. This is paper part A. You'll need a second piece that is at least 10 inches wider than the bodice width for extending the sides to make the bubble shape. That is paper part B.

    Take paper part A: from each corner, measure inward 2 1/2 inches and down 3 inches and make a "J" shape on either side. If doing a much smaller or larger size, (like an preemie infant or larger toddler) add or subtract a 1/2 inch, or more, to both these measurements. This style is pretty forgiving since it gets gathered at the end, so it's ok if it's not exact.

  • How to sew a romper. Easy Any Size Baby Bubble Romper - Step 2
    Step 2

    Place paper part A over the top of paper part B, centering it so there's 5 inches on either side. With a ruler at the top corner of the underarm area of part A, draw a diagonal line outward that is 5 inches wider at the bottom on either side. This will create the necessary bubble shape.

  • How to sew a romper. Easy Any Size Baby Bubble Romper - Step 3
    Step 3

    Now make a line down the center of the paper and measure a rectangle at the bottom that is 5 inches wide by 2 inches high. This will be the snap area. From the outer diagonal lines, measure up 5 inches and create a curved line from the top of the snap rectangle to that outer 5 inch measurement on either side. This will create the leg hole areas.

  • How to sew a romper. Easy Any Size Baby Bubble Romper - Step 4
    Step 4

    Tape the papers together and then cut along the drawn lines.

  • How to sew a romper. Easy Any Size Baby Bubble Romper - Step 5
    Step 5

    Cut out two pieces from the fabric (front & back), with fabric folded in half, with selvages on one side.

  • How to sew a romper. Easy Any Size Baby Bubble Romper - Step 6
    Step 6

    With right sides facing, stitch the side seams together with a 3/8in seam allowance.

  • How to sew a romper. Easy Any Size Baby Bubble Romper - Step 7
    Step 7

    Encase the underarm area of each side in double fold bias tape, pin and then stitch together close to the open edge.

  • How to sew a romper. Easy Any Size Baby Bubble Romper - Step 8
    Step 8

    Create the neck casing by folding the top raw edge over to the wrong side of the fabric by 1/4in and pressing.

  • How to sew a romper. Easy Any Size Baby Bubble Romper - Step 9
    Step 9

    Fold again, down one inch this time and press. Stitch down near fold.

  • How to sew a romper. Easy Any Size Baby Bubble Romper - Step 10
    Step 10

    To make the stretchy elastic straps I did, determine the shoulder strap length by measuring the distance from the center of one shoulder to another and double that + 1 inch. For my 3-6 month size daughter, it was inches 13 long so I cut 14in from the decorative elastic I had. If you're not sure or don't have decorative elastic, a piece of ribbon could be used instead, just make sure it's long enough to tie in a small bow.

    With a safety pin, snake the elastic/ribbon through the front and back casings.

  • How to sew a romper. Easy Any Size Baby Bubble Romper - Step 11
    Step 11

    Overlap the elastic ends about an inch and zig zag stitch together. Pull the elastic so the stitched ends get hidden inside a casing and the gathering is evenly done on both sides.

  • How to sew a romper. Easy Any Size Baby Bubble Romper - Step 12
    Step 12

    For the snap up bottom, fold the end 1/4 in over towards the wrong side of the fabric and press.

  • How to sew a romper. Easy Any Size Baby Bubble Romper - Step 13
    Step 13

    Now fold that bit up 1/2in toward the right side of the fabric and press. Stitch down 1/2 inch inward on either side. Clip the raw corners down and fold right side out.

  • How to sew a romper. Easy Any Size Baby Bubble Romper - Step 14
    Step 14

    This creates a layered little pocket to put the interfacing or extra layer of fabric in that will reinforce it for the snaps. This is key to keeping the fabric from wearing holes around the snaps since it'll get pulled on a lot with frequent opening.

  • How to sew a romper. Easy Any Size Baby Bubble Romper - Step 15
    Step 15

    Fold the raw edge of the leg area under 1/8 in, press and repeat to make the leg hem. Stitch down.

  • How to sew a romper. Easy Any Size Baby Bubble Romper - Step 16
    Step 16

    Cut two pieces of 1/4in wide elastic that are 1 inch wider than baby's thigh measurement (Mine were 9inches for my chunky legged 4.5 month old). Mark the center of each piece and match that to the side seam of each leg area.

  • How to sew a romper. Easy Any Size Baby Bubble Romper - Step 17
    Step 17

    Starting at one end of a leg hole, stretch the elastic next to the hem and stitch down with a wide zig-zag. This will create the cute gathering. Repeat on remaining leg hole.

  • How to sew a romper. Easy Any Size Baby Bubble Romper - Step 18
    Step 18

    Set snaps along the crotch ends (make sure one snap side faces down and the other faces up). Admire your cute new bubble romper and dress that baby for summer!

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