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MN2501 Cottesloe / MN4501 Mini Cottesloe / Sewalongs

Cottesloe Sewalong // Views C & D bikini construction

How to construct the bikini view of the Cottesloe swim pattern by Megan Nielsen Patterns

It’s time to go over the two piece version of the Cottesloe swimsuit! This is actually very basic construction, basically just sewing seams together. So I’ll also go into more in depth, showing you both the low rise and high waisted bottoms – one unlined with gusset, one fully lined. And I’ll also show you the optional lining for the top, as well. It’s a bit of repetitive info from the previous posts for View AView B, but that way if you are making a bikini, you have all the info in this post, and you won’t have to go back and forth the reference others! I hope that’s helpful.

So we will go over construction today, and then go over elastic insertion and the optional waistband and underband in separate posts later on. Ok? Let’s do it!

// BIKINI TOP //

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen Patterns how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsPlace your Front and Back bikini top pieces together with right sides together. Line up the shoulder seams and side seams, and pin in place.

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsSew the seams 1/4″ from the raw edges using a zig zag stitch or serger/overlock.

// OPTIONAL BIKINI TOP LINING //

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsIf you would like to line your bikini top, cut both the front and back pattern pieces from swimsuit lining fabric.

Note – if you would like to add foam cups to your bikini lining, that is the only thing I didn’t include in this post. See the ‘optional foam cups’ section of the View A post for those steps. Add the foam cups before constructing your lining and attaching to the main fabric.

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsPlace your front and back lining together with right sides together. Line up the shoulder seams and side seams, pin in place, and sew together 1/4″ from the raw edges using a zig zag stitch or serger/overlock.

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsTurn your top/main fabric inside out, and the lining right side out.

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsSlide your bikini top inside the lining.

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsMatch up the neckline, armhole, and bottom edges and pin the main fabric and lining together.

This will now be treated as one piece of fabric and ready for elastic insertion.

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsOptional: you could also sew the main fabric and lining together along all these openings to better secure the two. Use a zig zag stitch or serger/overlock along the very edge of the fabrics (if using a serger, don’t cut off any seam allowance).

// UNLINED BIKINI BOTTOMS WITH GUSSET //

I’m going to show you the unlined option on the low-rise bottoms. But the same steps apply to the high waist bottoms.

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsNote: you can use self fabric or swimsuit lining fabric for your Gusset.

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsPlace your bikini bottoms together with right sides together, line up and pin along the side seams.

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen Patterns how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsWith the back of your bottoms facing you, place the Gusset right side down on the Back and align the crotch edges. Pin together through all three layers (gusset, back, and front).

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsSew the side seams and crotch seam 1/4″ from the raw edges using a zig zag stitch or serger/overlock.

At the crotch seam you will be sewing through 3 layers of fabric.

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen Patternshow to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsFlip the Gusset towards the Front of the bikini bottoms so that the right side of the gusset is now facing outwards.

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsPin the Gusset to the front leg openings to keep it in place and ready for elastic insertion.

// FULLY LINED BIKINI BOTTOMS //

I’ll be showing the fully lined option on the high waist bikini bottoms, but the same steps apply to the low rise bottoms.

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsPlace your Front and Back pieces together with right sides together. Line up the side seams and crotch seam (no gusset), pin in place, and sew together 1/4″ from the raw edges sing a zig zag stitch or serger/overlock.

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsCut both the front and back bikini bottom pattern pieces from swimsuit lining fabric.

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsPlace your front and back lining together with right sides together. Line up the shoulder seams and side seams, pin in place, and sew together 1/4″ from the raw edges using a zig zag stitch or serger/overlock.

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsTurn your bottoms/main fabric inside out, and the lining right side out.

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsSlide your bikini bottoms inside the lining.

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsMatch up the waist edge and leg openings, and pin the main fabric and lining together.

This will now be treated as one piece of fabric and ready for elastic insertion.

how to sew the bikini versions of the Cottsloe swimsuit by Megan Nielsen PatternsOptional: you could also sew the main fabric and lining together along all these openings to better secure the two. Use a zig zag stitch or serger/overlock along the very edge of the fabrics (if using a serger, don’t cut off any seam allowance).

Cottesloe Swimwear Pattern Envelope

// LOOKING FOR MORE COTTESLOE POSTS? //

Here’s the full list of Cottesloe posts and tutorials:

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About Author

Holly writes part time for the Megan Nielsen blog– sewing like crazy, creating tutorials and sewalongs. She has been sewing since she was a little girl, and has her degree in apparel design. Now she’s a stay at home mama, and spends all her free nap times at her sewing machine.

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Kathy Britten
Kathy Britten
2 years ago

Have received my pattern and loving your online instructions. Just one question is it possible to make the two piece bottoms in between the bikini and high cut. Would I have to make any adjustments to the pattern? Thank you.

Mia
Mia
2 years ago

Hi there! I’m about to make view D top and bottom. I’m wondering, if it would be possible to make it fully lined. I chose my fabrics so, that I could use bikinis both ways, if you know what I mean. What would then be sewing orders and how to sew elastic band in that case. I have both sewing machine and serger. I hope, you’ll be able to answer as soon as possible. Thanks!

Mia from Finland