Part 2 of Making a shirt into a onesie/romper/all in one

Hi again 🙂 This is the second part of the romper tutorial.
Here is link to part 1.
For this part you will need:
Your pattern pieces fro previous tutorial
Old but good condition shirt
Bias binding 1 inch wide
Sewing Machine
Technical words (sort of)
Just to help you on your way:
Right side of fabric is the pattern side that you wish to use.
Wrong side is the side that either pattern isn’t on or the colour is less vivid the side you don’t want to see.
Overlock finishes the edge off.
Seam allowance is the allowance you allow for the seam without affecting size of item.
All seams are 1cm unless otherwise stated, which means you sew 1cm from edge of fabric usually indicated by a 10 on your needle plate.
Backtack at start & end of each line. This keeps your stitching from unravelling & most machines have this button on the front above needle.
First Step
Lay out your shirt so the button is facing down & flat.


Now your front pattern piece so that the CF is in line with the buttons. Make sure you have a button at the top but leave at least 1cm for seam allowance.


Pin it all down keeping CF next to the edge as above picture shows. Cut this out
Now repeat for other side of shirt. Ensure the button holes match up to the buttons on other piece by marking pattern. My shirt has nice pin tuck detail so I cut mine to include this but not so was symmetrical.
You will have 2 pieces that when buttoned together look like this.


Second Step
Lay shirt out with back showing & place your back pattern piece on. Make sure if you wish that the pattern runs in same direction as front pieces.
I cut mine high as the shirt has a facing inside which will strengthen my piece.


Third Step
We will now cut the sleeves. I cut mine on the cuff. These will be bigger than usual baby clothes cuffs but adds to the interest and saves me a job.


As can see from my picture the sleeve has a slight curve to it so my pattern piece doesn’t sit next to seam. I chose to cut it so this curve was included creating slight billow to the sleeve when made.


I found when cutting the other sleeve that the button wasn’t in same place as can see below. I decided because of the billow in the sleeve that the button couldn’t be in same place.


So I laid the previous cut sleeve & the pattern piece on the sleeve at the base like before. The pattern allowed me to see where to cut the cut sleeve allowed me to have exact same size billow at base of sleeve when cut.


I cut out the back & front facing. The back piece needs to be cut on a fold I used the rest of the sleeve to do this. The front is 2 separate pieces.
Sewing Part
First Step
Make sure your front & back pieces are buttoned together using a pin mark where you want the romper to open to.


Sew along the buttons following existing stitch line to join the pieces up to pin. Then sew across top of button to secure.
You should now have a romper front that buttons open to a point & is fixed rest of the way down.
Second Step
Hem both front & back facings by folding under 1cm then another 1cm. This is a closed hem. Sew at very top of this hem.
CIMG7851 CIMG7854
Pin right front facing on right side of romper right side of material is to the right side of the romper (you will repeat this step for left side). Sew round the neck line stopping before reach buttons.
You will have a rough edge where the buttons & buttonholes start. Turn this under twice to form a close hem but so you don’t cover the button hole. Sew.
Now turn the edge of the facing under so the edge sits at the egde of buttons & buttonholes. Sew along close to edge.
Turn this to the inside so you should have a nice tidy edge at neckline. Top stitch along neck line about 1/8″ in.Now do same for back pin back facing so the right side of material is to the right side of the romper. Sew along neck line & turn to inside. Top stitch along neck line.
Third Step
Turn your sleeves so right side is facing right side. Using 1cm seam allowance sew along top open edge. Turn right side out. Repeat for other side.
CIMG7840 CIMG7841
You now have 2 baby shirt sleeves.
Fourth Step
Now lay back romper piece on top of front romper piece, right side to right side. Using 1cm seam allowance sew along each side from armpit to ankle then across shoulders. Make sure you trap the facing into this seam & don’t sew arm hole shut.
CIMG7872 CIMG7874
Fifth Step
Now we will finish the raw seam this is called overlocking. All you need is a zigzag stitch however some machines have special overlock stitch. You can also buy special feet to help you with this.
first pic: stitch 20 is the overlock stitch
second pic: the overlock foot
third pic:overlocked edge
CIMG7878 CIMG7879 CIMG7882
Zigzag or overlock stitch all raw edges, side seams, shoulder seams, inside legs seams & sleeves. You may wish to trim your seams to tidy them & make smaller. Make sure you open out the legs to do hem so you don’t accidentally sew the legs together.
Sixth Step
Next step is to prepare the legs. Hem each ankle by folding under 2cm & sew along top edge of that hem.
You can then sew along bottom of this hem to create a double line effect & flattens the hem.
Seventh Step
Next step is the sleeves. Starting at armpit place the right side of the sleeve to right side of the romper pin in place.
As mine had extra for a small ‘billow’ I will start at bottom so if I need to gather any I can do this at shoulder rather than under arm. Itried to get pictures of this step but my camera wouldn’t take a clear picture if nneed help just email me.
Once pinned sew all around using 1cm seam allowance, taking pins out as you go.
Because the armhole is small this can be fiddly so starting at armpit flatten the shoulder to the romper making sure the inside is showing & all other parts out of way to ensure your just sewing sleeve on!
Then go slow. Sew a bit at a time lifting foot to adjust pattern like shown.
Overlock this edge like before.

Eighth Step

Get your bias binding & fold under 1 edge by 1cm.


We need to pin this onto the romper along the inside leg with even amount each side.


Straighten the crotch a little to pin otherwise you will end up with uncomfortable bunching.


When reach other end fold cut the bias leaving 1cm for turning under, tuck under & pin.
Start sewing this as close to inner edge, about 1cm from edge, so it goes through both layers of binding.
Repeat for other leg.
Next we will sew on our popper tape. Position & sew either side of tape so sits on the bias binding. You will need to sew the front tape on outside of romper & the back tape on inside of romper.
Line up one side first then make sure other side matches so they will clip together evenly.
Start sewing up one edge of tape. You will need a zipper foot for this. I highly recommend adjustable type as you can get closer than with a standard one.
Sew across short edge.
Then sew down other side of tape.
Repeat for other leg. Make sure you straighten crotch as sew or will bunch.
Iron your garment & try it on baby & admire your hard work. Ours looks big as is for next size clothes pile but just had to try it on & although pics don’t show it I’m rather pleased how it came out 🙂
CIMG7948 CIMG7951 CIMG7954 CIMG7957
Thanks for doing this with me I learnt on the job hope you did too.
Next time I will post the short version with the instructions so keep hold of that pattern.

Here is part 3


I am a mum of 2 boys and 1 girl.

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Posted in baby and Kids, Recycling, Upcycling and Scrap Busting, Sewing, Tracy's Tutorials
5 comments on “Part 2 of Making a shirt into a onesie/romper/all in one
  1. […]  You will need:shirtpinsscissorspatternpopper tape First Step Get your shirt & follow the instructions here for cutting […]

  2. […] pattern Pins Thread Popper tape Bias binding that coordinates with your shirt See you then!! For part 2 click here! If you need any help at all with this either leave a comment underneath or personally email me […]

  3. […] pattern Pins Thread Popper tape Bias binding that coordinates with your shirt See you then!! For part 2 click here! If you need any help at all with this either leave a comment underneath or personally email me […]

  4. […] Posted on 16/02/2013 by shroomypix So as promised here is the 2nd romper I made from a shirt. This one is sleeveless & shortie style perfect for summer.   Make sure you have your pattern from last time.   Here’s link to how to draw that out:   You will need: shirt pins scissors pattern popper tape   First Step   Get your shirt & follow the instructions here for cutting out:… […]

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