CLO 3D and Marvelous Designer are professional 3D garment software: you create pattern pieces, stitch them together virtually and simulate how the fabric drapes on an avatar. Ourlette is a pattern maker for home sewists: it drafts a printable pattern from a photo or a description to your measurements. If you design clothes professionally or build 3D characters, the CLO tools are the right kind of software; if you want to sew a garment this weekend, Ourlette is.

What are CLO 3D and Marvelous Designer?

Both are made by CLO Virtual Fashion. CLO, often called CLO 3D, is aimed at fashion designers, studios, brands and schools. You create 2D pattern pieces, sew them in 3D on an avatar, and the software simulates fabric with physical properties such as weight, stretch and stiffness, so you can judge fit, silhouette and materials before making a physical sample. It is widely used for virtual sampling in the fashion industry and has academic programs for schools.

Marvelous Designer uses the same idea of sewing 2D patterns into 3D garments but is aimed at 3D artists: it is built for dressing characters in game development, animation and visual effects.

At the time of writing (October 2026), both are desktop software for Windows and macOS (Marvelous Designer also runs on Linux) and are sold by subscription. Marvelous Designer is rental-only, with personal and enterprise plans; CLO offers individual and enterprise plans, a free trial and options for students.

How is Ourlette different?

Ourlette is not a design or simulation tool; it is a pattern maker. You show it the garment (a photo, a screenshot, a Pinterest or Instagram link, or a description), and it recognizes the garment, uses the matching type from its catalogue of 36 or, on the Maker and Atelier plans, has its AI pattern maker draft a new design, and draws every piece from flat-pattern blocks with your measurements and the right ease. You never draw a curve yourself.

The 3D view shows the garment on a mannequin built from your measurements, in a plain color or with the print from your picture. It is a preview of silhouette and proportions, not a physics simulation: it will not show how a heavy wool drapes differently from a silk. What Ourlette gives you instead is what a home sewist needs next: a true-scale PDF on A4, US Letter, A3, Tabloid, A0, 36 × 48 in or for a projector (on paid plans), seam allowances included, and a step-by-step sewing guide you can ask questions, with fabric quantities and cutting layouts.

When is CLO 3D or Marvelous Designer the better choice?

  • You need realistic drape. If you want to see how a fabric behaves, compare materials or check tension on a fitted garment virtually, a physics-based simulator is the tool. Ourlette's preview does not do this.
  • You design professionally. CLO's pattern, fabric and colorway tools serve design teams and fashion students.
  • You make 3D assets. For games, film or animation, Marvelous Designer is built for the job.
  • You want full control of every piece. Since you create the pattern yourself, you decide every line of a tailored jacket, a corset, lingerie or a costume, and can check it in a drape simulation.

When is Ourlette the better choice?

  • You want to sew, not model. Ourlette turns an image into a pattern you can print and cut, without learning 3D software or pattern drafting.
  • You do not have pattern-making skills. CLO and Marvelous Designer are built for people who create or import pattern pieces; getting a sewable, well-fitting pattern out of them takes pattern-making knowledge. Ourlette drafts the pieces for you.
  • You want instructions. The professional tools do not write sewing steps for a home sewist; Ourlette's guide does, with the pieces list, notions and cutting layouts for your version.
  • You want a lower cost and no installation. Ourlette runs in the browser and inside ChatGPT and Claude; the free plan includes the 3D preview, and printing starts at $7.99 a month or $59 a year.

What are the limits of both?

CLO and Marvelous Designer have a steep learning curve and professional pricing, and they are built for designing and visualizing garments rather than for producing a home-print pattern with a sewing guide. Ourlette's 36 catalogue garment types are tested; anything else is a new design from its AI pattern maker that has not been sewn yet, and very structured tailoring, underwired bras and boned corsetry may need adjusting by hand. Its 3D preview helps you judge proportions, but a toile remains the real test of fit.

Can you use both?

They rarely replace each other. A fashion student might develop collection pieces in CLO and sew everyday clothes from Ourlette patterns. If you are a home sewist curious about 3D, Ourlette's preview on your measurements answers the question most people have before cutting (is this length right on me?), and our article on why see your garment in 3D before you cut explains why that preview is worth a look.