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estimated reading time: 12 min

Sew a cosmetic bag with an angled zipper

17.10.2023 by Sabine Schmidt

Kosmetiktasche mit schrägem Reißverschluss nähen

Sewing a cosmetic bag with a diagonal zipper: With this tutorial and the free pattern, even beginners can successfully make this bag with a slanted zipper.

At a Glance

  • In this post, I will show you how to sew a cosmetic bag with a diagonal zipper
  • You will learn which fabrics are suitable and which fusible interfacing you can use
  • The bag is sewn using a turned-seam technique, meaning there are no visible seams on the inside
  • You can download the free pattern in 2 sizes here on the blog
  • The DELIS pattern for the cosmetic bag is designed for woven fabrics
  • Sewing level: intermediate
  • Sewing time: 1 afternoon

The highlight of this bag: The diagonal zipper, which runs across the top edge of the bag toward the other side. This looks incredibly cool and is also useful: the wide opening of the zipper gives you a great overview of the bag's contents.

I sewed one of the bags using Birgit's improv quilting technique and think it is stunning. You can find a detailed tutorial here: Free Cutting – Patchwork tutorial for improv quilting

If you like, you can also use our patchwork techniques to sew the bag. This way, you don't just use up your fabric scraps – you even elevate them! 🙂 And if you wish, browse through our sewing tutorials to find another suitable project and sew your way to happiness.

YouTube Video Sewing a cosmetic bag with a diagonal zipper

How difficult is it to sew the DELIS cosmetic bag?

Not quite sure if your sewing superpowers are enough for this bag? Don't panic. The only part that is a bit fiddly is sewing the side seams. But so you can see how it works, I have explained everything step-by-step in the picture tutorial and the video.

Very important: The pattern pieces for the bag are not cut in reverse (i.e., mirrored)!

READING TIP: Sewing bags: My top 25 tips (by the way, we also have a worth-listening podcast on the topic of bags!)

What do I need to know as a beginner before I start?

It is best to buy a sturdy, non-stretch cotton fabric and a medium-weight fleece, such as Vlieseline H630. Wash and iron your fabric and gather your sewing supplies. You will need a size 80 universal needle and a continuous zipper.

If you haven't worked with sturdy fabrics (woven fabrics) yet, you should take a look at my blog post on sewing with cotton fabric. It covers everything you need to know about working with woven fabrics.

What does my sewing machine need to be able to do to sew a cosmetic bag with a diagonal zipper?

A completely normal household sewing machine is absolutely sufficient for this project. It should be able to sew forwards and backwards. This is important for locking the seams.

You can use your walking foot to topstitch the seams onto the foam interfacing. And a zipper foot is very suitable for sewing in the zipper.

Reading tip: Sewing machine feet and their uses

Which stitches are suitable for sewing bags?

Because we reinforce the back of all the fabrics used for this bag, the raw edges are protected from fraying. They do not need to be finished. This means you only really need to use a straight stitch.

For the stitch length, you can experiment to see what looks best. I use a stitch length of 2.5 mm for "normal" construction seams. For topstitching, I increase the stitch length to 3.5 – 4 mm, because it gives the seam a nice, uniform look.

A longer straight stitch is also perfect for topstitching Style-Vil.

Which needle is suitable for this bag project?

For woven fabric, a size 80 or 90 universal needle is particularly suitable. You should sew a test seam beforehand to see if the needle creates beautiful stitches. Otherwise, insert a new needle before you start sewing.

For the topstitching, you can also use a topstitch needle; it creates particularly even topstitching.

If you want to use heavy canvas, I recommend a size 110 denim needle. If you have a denim foot* for your sewing machine, you should use it. It makes working with thick fabrics much easier. I bought such a denim foot for my Bernina 770 QE and I am really thrilled because it ensures such great fabric feed.

Reading tip: Everything about sewing machine needles

Which sewing feet to use for sewing a zippered bag?

For this sewing project, you need a zigzag or straight stitch foot. If you also want to sew a zipper panel into your bag, you will need a zipper foot. For the version with piping, I recommend using a piping foot. Read more about sewing piping here.

READING TIP: If you would like a little bit of tutoring regarding sewing feet, you are in the right place in my blog post Sewing machine feet and their uses. 🙂

Which fabrics can be used to sew the zippered bag?

The DELIS cosmetic bag is perfect for simple, not-too-thick woven fabrics. Poplin, flag cloth, linen, patchwork fabrics – they are all great to sew and very well suited for this project.

Where can I find the fabrics used?

All the fabrics I used to sew my bags can be ordered directly from Simone*. Here are a few examples of great fabrics that are well-suited for the bag.



How do I pre-treat the fabric?

To ensure the bag doesn't shrink during the first wash and the colors don't bleed, you should wash the fabric before sewing and iron it thoroughly afterward. If your fabric is very soft, you can also stabilize it with a little spray starch, which makes it easier to work with.

Reading tip: Wash fabrics before sewing?

DELIS bag fabric requirements

You can sew the bag with the diagonal zipper from many different fabric scraps. Or you can sew it inside and out using just one fabric color. The special shape of the bag comes across particularly well if you use two contrasting outer fabric cuts.

With a fabric width of 140 cm, you need

Small version – 1 outer fabric

  • 30 x 45 cm outer fabric
  • 30 x 45 cm lining fabric
  • 30 x 90 cm Vlieseline H630
  • 28 cm continuous zipper

Small version – 2 outer fabrics

  • 30 x 23 cm outer fabric 1
  • 30 x 23 cm outer fabric 2
  • 30 x 45 cm lining fabric
  • 30 x 90 cm Vlieseline H630
  • 28 cm continuous zipper

Large version – 1 outer fabric

  • 40 x 65 cm outer fabric
  • 40 x 65 cm lining fabric
  • 40 x 65 cm Vlieseline H640
  • 43 cm continuous zipper

Large version – 2 outer fabrics

  • 40 x 33 cm outer fabric 1
  • 40 x 33 cm outer fabric 2
  • 40 x 65 cm lining fabric
  • 40 x 65 cm Vlieseline H640
  • 43 cm continuous zipper

How big is the DELIS bag?

The cosmetic bag with a diagonal zipper has the following dimensions

Small version:

  • Height: approx. 14 cm
  • Width: approx. 20 cm
  • Depth (measured at the base): approx. 9 cm

Large version:

  • Height: 21 cm
  • Width: 30 cm
  • Depth (measured at the base): approx. 12 cm

To make the bags smaller or larger, you can also print the pattern at a smaller or larger percentage.

DELIS cosmetic bag free pattern

You can download the pattern for the original zipper bag for free in our freebook section.

Sharing the pattern is prohibited, as is commercial use.

Print the pattern at 100% without page scaling. The printer should be set to "Print document and all markups" so that the labels are also transferred to the pattern.

A seam allowance of 1 cm is already included in the pattern.

How can I get the free pattern?

Would you like to sew the bag with a diagonal zipper? Great! To access this and many other exclusive freebooks and free patterns, it is best to proceed as follows:

  • Sign up for the SewSimple newsletter
  • Click the newsletter sign-up in the confirmation email: Yes, I want...
  • After receiving the SewSimple welcome email, you are officially a subscriber
  • Create a customer account with the same email address*
  • Log in
  • Click the download link or go to the pattern via the freebook section of your customer account.

It may also help to clear cookies and cache, use a different browser or incognito mode, or use a different device. It often works on a PC or laptop if it doesn't work on your mobile phone.

It is also always a good idea to check if your browser is up to date or if your browser settings are preventing a download. :)

  • Please understand that I cannot send the pattern by email. Unfortunately, I cannot answer requests for this. It is all the more important that you follow the instructions above for downloading correctly.
  • For questions about your customer account, definitely take a look at the FAQs!
  • If the freebook section is not displayed on mobile, it helps to open the page on a PC. However, you can also swipe left in the mobile view to see the download link. 🙂
  • If you have received the newsletter before but forgot to confirm your subscription (this can happen for technical reasons), it helps to unsubscribe using the "Unsubscribe link" at the bottom of the newsletter, sign up again, and then confirm your subscription.

Sewing a cosmetic bag with a diagonal zipper: Required accessories

  • Matching sewing thread
  • Vlieseline H630 (small version) or Vlieseline H640 (large version) to reinforce the outer fabric
  • Vlieseline S 320 or H200 to reinforce the lining
  • Sewing machine

Links marked with * are affiliate links: If you make a purchase through them, we receive a small commission. The price remains the same for you.

Step-by-step instructions

Tutorial: sew a cosmetic bag with a diagonal zipper

Sew a cosmetic bag with a diagonal zipper: with this tutorial and the free sewing pattern, even beginners can make the pouch with a slanted zipper.

The special feature of this bag: the diagonal zipper that runs across the top edge of the pouch to the other side. It looks incredibly cool and is useful too: thanks to the wide-opening zipper you have a good view of what's inside the pouch.

  1. Step

    Fabric pieces needed

    Fabric pieces needed

    2 x main fabric (long edge to the left)

    2 x lining fabric (long edge to the right)

    1 x zipper with 1-2 zipper pulls

    Step 1

    Mark the centre of the zipper.

    Transfer the centre marking onto the slanted edges of the fabric pieces.

    Now you need 1 pattern piece of main fabric and one of lining fabric, plus the zipper with the pull threaded on.

    Fabric pieces needed
  2. Step

    Pin the zipper right side to wrong side, centred on the slanted edge of the main fabric.

    Pin the slanted edge of the lining fabric centred on the wrong side of the zipper.

    The right sides of both fabrics now lie flush on top of each other.

    Sew in the zipper with 1 cm seam allowance.

    If you thread a zipper pull on from each end of the zipper, it's even easier to catch the zipper ends closed in the seam at the end.

  3. Step

    This is what it should look like now

    This is what it should look like now.

    Step 3

    Pin the second pattern piece of outer fabric right sides together, flush to the free side of the zipper.

    Pin the lining piece flush to the wrong side of the zipper.

    Again, use the centre marking as a guide.

    This is what it should look like now
  4. Step

    Sew in the zipper on this side with a 1 cm seam allowance as well.

    Then press the seam next to the zipper.

    This is what it should look like from the wrong side now...

  5. Step

    ...and like this from the right side.

    ...and like this from the right side.

    Step 5

    Fold the two outer pieces and the two lining pieces towards each other.

    Pin the bottom edges of the outer fabric right sides together, flush.

    Do the same with the lining fabric bottom. But leave a turning gap of 6-8 cm here.

    ...and like this from the right side.
  6. Step

    Close the bottom seam in the lining. Leave a turning gap open.

    Close the bottom seam of the outside completely.

    In both cases, the corners are left open for now.

    Open the zipper a little so that you can turn the bag later.

  7. Step

    Pin the side edges of the outer fabric above the corner right sides together, flush.

    Pull the upper corner nice and smooth and also make sure the zipper lies flat.

    Step 8

    Do exactly the same on the second side.

    Sew the edge up to the upper zipper seam with a straight stitch.

  8. Step

    Also sew the edge between the lower zipper seam and the corner with a straight stitch.

    While sewing, fold the zipper slightly to the side so that you don't catch it in the seam yet.

    This is what it should look like now.

    Repeat this step on the other side and make sure you don't catch the lining in the seam.

    Step 9

    Pin the lining pieces together just like the main fabric pieces.

    Close both edges up to the zipper seams.

    You already know how this goes. ;)

  9. Step

    Here too, make sure the outer layer isn't in the way

    Here too, make sure the outer layer isn't in the way.

    Then place the lining and outer fabric flush on top of each other at the zipper and close the gap at the zipper with a short seam.

    Step 10

    Pull the corners of the lining and outer fabric apart.

    The side and bottom seams should meet exactly.

    Close the corners with a straight stitch and 1 cm seam allowance.

    Fold the seam allowances apart so that the seams lie flatter.

    Here too, make sure the outer layer isn't in the way
  10. Step

    Trim the zipper and seam allowances a little.

    Step 12

    Turn the bag right side out through the turning gap and shape the seams well.

    Press the seam allowances of the turning gap 1 cm to the inside and pin them together.

    Close the turning gap by edgestitching with a straight stitch.

    Push the lining into the bag and give everything another good press. Done!

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About the author

Sabine

I come from Siegen-Wittgenstein, where I spent my childhood breaking in cows, jumping off haystacks and scraping a D- in needlework class.

Today, being creative feels like indescribable happiness to me – and it grows even more when I can share it with others. Since 2016 I have been celebrating my passion for sewing on this blog, and I love that sewing connects so many people.