Add a fake fly on Elastic Waist Pants

add a mock fly

Sewing for the kids without having regular access to them can be challenging for a Grandma! When I find a pattern that I know fits them I rely on it. I have an elastic waistband pant pattern that I know is a good fit for Mr. O. But a drawer full of elastic band pants isn’t that exciting- so I’ve been on a mission to redesign my pants into more interesting versions. Today I’m going to go through how to add a fake fly and pockets to an existing elastic waist pant pattern.

Adjusting the Fake Fly

The fly was easy to add.   You’ll do these next steps on both of your pant legs. Start at the pattern’s waistline and add 2″ inches. Draw a line straight down toward where the crotch curves out. Stop about 2″ away from your crotch seam and draw a curve till you are back at the original cutting line. It should look like this —–>

adding a mock fly


Sew the crotch seam as you would if you hadn’t added the fly piece. Now press your fly piece to the left. Top stitch along the seam line. Top stitch the mock fly you created and pressed to the back left.  This will give you the look of a fly, but no real opening. Bartack at the base of the fly, again giving the look of a “real” fly opening.  find instructions for bartack here.

install mock fly

Finish the inside of the pants by serging or adding a zig zag stitch the outside edge of the fabric piece you added. If you are serging make sure you don’t cut your pants!

add a mock fly


Cutting the Pockets

To make the pockets I took the pattern piece and cut the area out where i wanted the pocket to be.

add a pocket

I used the piece I cut out to shape my pocket and pocket lining. The pockets, cuffs and waistband are all in this fun contrasting argyle that I found quite by accident one day while shopping for something else.  That is always the way it happens, isn’t it?

design your own pocket

Begin by sewing your pocket lining to the front of your pant leg right sides together.

sew pockets

Press seam open and turn. Top stitch along the edge.

Match your pocket and pocket lining right sides together and sew along pocket edge.

add pockets

Bartack in the corner of your pocket to add stability.

how to add pockets

Continue to construct your pants as directed.



For a fun look I added a contrasting waistband.  Since these pants had a turn over elastic waist they needed to be shortened up so that I could add the waistband.  I simply subtracted the waistband from the pant and then added back my own waistband.  I stitched two lines and because there is only elastic in the back the front will lie flat.

Sewing Boy pants



I added cuffs and a tab for even more interest.  I know these will be long for Mr O but we can roll the cuff for now and hopefully he will still be able to wear them in the fall .  Can you even believe I am talking about fall when we have not even had spring yet!  Oh the fun of growing children!  I guess being a grandma and having gone through growth spurts with four children, I tend to look forward a little more.

Sewing boy pantsLooking forward to trying them on O over Easter!

Happy Sewing,



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{ 6 comments… add one }
  • Jill Flory March 21, 2013, 8:31 am

    SUPER CUTE! I love seeing great stuff for boys!
    Jill Flory recently posted..Tank Top Turned DressMy Profile

  • Venus March 21, 2013, 10:33 am

    Great redesign! I love the argyle.
    Venus recently posted..We all need a pep talkMy Profile

  • Pam March 21, 2013, 10:55 pm

    I know exactly how you feel about sewing for kids when you can’t try the garments on when you want to. Great additions to jazz up the pants. I really like how you’ve added a tab to the cuffs… just adding that tiny thing makes a huge difference.

  • Ajaire March 22, 2013, 6:29 am

    I love all these extra details. It really makes the pants special. Making clothes without the model nearby is so difficult. One of my good (non sewing) friends tried to measure her daughter’s waist for me using a hardware tape measure. Haha suffice it to say the measurement was a bit off 🙂

  • Cindy March 22, 2013, 1:19 pm

    I love the argyle fabric you used! It’s a great (and fun!) contrast to the solid pants.:)
    Cindy recently posted..2 X 2My Profile

  • Amy Mayen March 25, 2013, 12:56 am

    I nominated you girls for a Versatile Blogger Award!
    Amy Mayen recently posted..Versatile Blogger AwardMy Profile

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