Sparklings are beings of energy, and their bodies are naturally amorphous. They use fire-proof cloth to bind their bodies into different shapes.
Sparklings living outside the Kingdom of Sparks often cover themselves more to avoid setting things on fire. Though sparklings have no innate sex or gender, they may present a gender as a fashion statement or just assimilate with gendered cultures.
In regalia appropriate for meeting non-sparklings without setting them on fire and more traditional sparkling attire, with a metal bearing the seal of sparks. The Sovereign Spark acsended the throne during the great war long ago when the Elder Sparks perished. They are very military-minded and see threats where there are none.