I get a kick out of seeing people genderbend or play with expectations, and cosplay as a male 'Gardevoir' is absolutely doable — maybe more doable than you think. From my experience at three conventions, the key is picking which aspects of the design you want to lean into: the flowing gown silhouette, the green headcrest, and that striking red chest gem. For a male take you can either keep the gown and just adjust proportions, or reinterpret the look with broader shoulders or a more tailored, suit-like base while keeping the iconic colors and shapes.
Materials-wise I recommend starting with a form-fitting base: a white long-sleeve bodysuit or tailored jacket. Build the chest gem from resin or foam and mount it on a small chestplate or harness so it sits naturally. For the headcrest, a green wig sculpted with foam inside works wonders — I used a lightweight craft foam armature covered in foam clay once and it survived a whole day of photos. If you want a more masculine silhouette, add subtle shoulder pads, tighten the waist with a built-in cinch, or skip hip padding. Conversely, if you prefer an androgynous look, use hip padding and softer shoulders.
Practical notes: vision can be tricky if you replicate the hair-veil over the face, so plan cutaways or a thin mesh for visibility. Binding the chest or using padding both require care — stay safe and test movement before the con. Overall, it’s a fun project that invites creativity. I always get the best photos when I push a single recognizable element — for me that was nailing the headcrest and the gem — and then let the rest be my spin on the character.