+ Custom fit your own blazer!

I’m very excited about this refashion or alteration or upcycle…whatever you think it is! I seriously have 4 jackets at home that I am going to do this to. I will say, with the jackets that are HUGE like men’s jackets or whatever, I will have to do some even more major changes and tutorial. So, that is to come!
blazer that needs to be fitted
knit fabric
marking pen or chalk
flexible measuring tape
sewing machine

1. Try on the jacket right side out and inside out and mark (I just mentally eyeballed it) how much you want to take in on the back seams and the side seams. I made sure to have the side seams curve in toward my natural waist, then back out for my hips. The back is the same, unless you want to shorten the back, then you can just take it in with out any curving. 
2. Seam rip the inside bottom stitch of the jacket that holds the lining and the jacket together to create a long opening that will expose the jacket’s inside seams on the wrong side of the main fabric and wrong side of the lining fabric.
3. Pull the jacket inside itself so the wrong side of the jacket is exposed. Sometimes the jacket’s lining is sewn into the main fabric’s side seams, if this is the case then you may have a lot more seam ripping to do ( take all the seams out and resew them back to gather after adjustments have been made) or you can do it the easy way and just take it in from the inside with the lining and jackets together with out any seam ripping at all! It just won’t look very pretty on the inside though. 
4. Sew a straight stitch down the back seam following your markings – you can make it a basting stitch (very long stitches) first so if you make mistakes or you don’t like how it looks, it will be very easy to take out. Repeat with the side seams. Remember, if you want it to look less boxy and more fitted to your natural waist, then sew a curve – it will taper bigger starting beneath the armpit toward the natural waist, then taper smaller toward the hips or bottom of the jacket.

5. If you want to take in the shoulders – you may have to seam rip the lining from it. Make sure the shoulder seam is the only thing exposed so make sure the sleeve is flipped under as you sew or the sleeve is shoved back into the jacket. Then sew a curve from mid or bottom shoulder to the same place on the opposite side. This is one of my favorite tricks!

6. If you want to take in the sleeves – measure and sew how much you want to take in at the arms, then taper from armpit to the end of the sleeve. 
7. IRON all the new seams down as flat as you can get it, you can iron it on the inside and the outside.

8. If you want the blazer shorter, mark and iron the fabric and lining to the desired length. 
9. Sew the lining and the jacket back together at the bottom by hand stitching. For best results, add some fusible interfacing in the fold of the main jacket fabric.


  1. You make this sound so easy. I’ve always been really intimidated by alterations this intense. Lining is just one step I’ve never pulled off before.

  2. You are amazing doing this stuffs, your blog is my inspiration
    Jeh Galvão blog Horadamake

  3. I’ve been waiting for this since your sneak peek yesterday. BTW Becks is the cutest. I have an old Banana Republic blazer that I haven’t been able to bear the thought of letting go, but it is very 90s, mid thigh length, boxy shoulders. Can wait to give this a try. YEAHOO. Thanks for sharing.

  4. AUGH! So amazing! my office-mate has a sewing machine…. maybe I’ll have her help me wrangle a thrift-store blazer into submission….

  5. Thanks for sharing!! One question: What did you do with the lining? With the blazer taken in in several places, the lining would,in theory be larger than the jacket? Or doesn’t it really notice when you are wearing it?
    Thanks :)

  6. I have been thinking about attempting this with some of my jackets. Thanks for the walk through. I have more confidence now :)

    Christine @ Projects Around the House

  7. great idea, thanks for sharing!

  8. You can take it one step further too… my mom did this for some jackets we both had, and because she already had to rip out most of the lining, we replaced it with a really cool contrasting fabric. Mine was hot pink!

  9. Some great tips! your fitted jacket looks heaps better:)

  10. amazing! i always thought that fitting a blazer is too hard to do! you proved me wrong!
    could you explain the 5th step in more detail? (the one about shortening the shoulder). i don’t quite understand how do sew the new seam. thanks!

  11. great tutorial !!! :)
    i actually have a blazer that
    i wanted in a smaller size
    so i might try this out :)



  12. THANK YOU for this! i have a banana republic jacket that’s been waiting to be worn but it’s just a little too big. This makes me so happy! now if only i can do it right:)

  13. This is so fantastic, but I’m having a hard time understanding some of the instructions on the very first part about where to seam rip and where to take in (is it better to take in the side or back seams?) and how to sew it all back up and how to use fusible interfacing. Is there any chance you could take more pictures?

  14. I need to do this with so many of my jackets!

  15. I need to do this with so many of my jackets!
    Claire from http://handmadebyclairebear.com

  16. I just thrifted a fabulous navy blazer but I’m way too scared to really alter it.. I’ve never done something this intense!

  17. You are so cool! I don’t think I have read through anything like that before. So great to discover someone with a few unique thoughts on this subject matter. Really.. many thanks for starting this up. This web site is something that is needed on the web, someone with some originality!

  18. Greetings! Very helpful advice within this post! It’s the little changes that produce the greatest changes. Thanks for sharing!

  19. Good blog you have got here.. It’s difficult to find quality writing like yours nowadays. I seriously appreciate individuals like you! Take care!!


  1. […] Custom fit your own blazer! […]