Reversible Triangle Bikini Set Sewing Pattern

The classic. Sew your own reversible triangle bikini set — top and bottom included — for two outfits in one make. The perfect first DIY swimwear project for beginners.

Why you'll love this pattern

• Complete bikini set: triangle top + tie-side bottom included
• Reversible — flip for a second colourway
• Sizes XS–5XL (size chart in product images)
• Step-by-step sew-along video tutorial on YouTube
• Beginner-friendly with no-trim pattern pages
• Instant PDF download — A4, US Letter and A0 formats

What's included in the PDF

• Print-at-home pattern pages — A4 and US Letter formats
• Large-format A0 file for projector or copy-shop printing
• Step-by-step photo instructions
• Full sew-along video tutorial (YouTube)
• Pattern layout guide and size chart

Sizing

XS–5XL — see size chart in product images. GigiZanti patterns are designed to be size-inclusive.

Fabric & notions

Fabric: 0.5 m (0.5 yd) of 4-way stretch swimwear fabric per side (Lycra, Nylon spandex, or Polyester spandex). Optional: swimwear lining.

Notions: Stretch needles 75/100, wooly nylon or 100% polyester thread, 0.6 cm (1/4") swimwear rubber elastic

Equipment: Sewing machine and overlocker (serger) recommended.

Skill level

Beginner — full sew-along video tutorial included for every step.

How it works

This is a digital PDF sewing pattern — instant download immediately after payment. A copy is also emailed to the address you enter at checkout. Print at home on A4 or US Letter, send the A0 file to a copy shop, or use a projector. No physical product is shipped.

Please note: due to the nature of digital products, returns and exchanges are not available. You are welcome to use GigiZanti patterns in your small sewing production.

Frequently asked questions

What's the skill level for this pattern?
Beginner-friendly. Every GigiZanti pattern comes with a step-by-step sew-along video tutorial on YouTube — sew along with me from start to finish. If you can use a sewing machine, you can sew this.

What file formats do I get?
A4, US Letter and A0 copy-shop PDFs. Print at home on a regular printer, send the A0 to a copy shop, or use any of them on a projector. All pages are layered so you can show only your size.

Do you really grade every size XS to 5XL?
Yes — every size in the range is drafted and tested, not auto-extended after the fact. The size chart is in the product images. If you fall between sizes, the sew-along video shows how to grade between them.

Can I sell what I make from this pattern?
Yes — you're welcome to use GigiZanti patterns to make items for your small sewing business or handmade brand. The pattern itself is for personal use only and can't be resold or redistributed.