A 3D double frill frock refers to a dress (typically a frock) designed with two layers of frills that have a three-dimensional effect, making them stand out from the garment and adding depth, texture, and visual interest.

Here’s a breakdown of the terms:

• 3D Effect: This indicates that the frills are designed in such a way that they are not flat but rather stand out, giving them a sculptural or voluminous appearance. The frills might be created with extra fabric, pleating, or layering techniques that make them more pronounced, as opposed to traditional, flat frills or ruffles.

• Double Frill: This refers to the use of two layers of frills or ruffles, which can be placed one on top of the other, usually at different heights or angles, to create a more dramatic, full look. These frills can appear along the hem, sleeves, neckline, or even across the bodice.

• Frock: A term often used to refer to a dress or a loose, elegant garment, especially in more formal or traditional contexts.