I've always had a soft spot for Betsy's original X-Men costume, and you don't see too many customs of it.

The arms and lower torso are from Dazzler, the upper torso is Medusa and the lower legs are Spider-Girl.

Sculpted the puffy sleeves and hair, the costume details were made in styrene then moulded and cast, and the psychic butterfly effect was sculpted, moulded and cast in clear resin, and attached with a magnet embedded in the head.