>>49544879Magical girls are very moldable to be honest considering the great variety they come in.
The trope has seen a lot of usage and it's very old, many magical girls come in big teams with many of them, and it has been subverted and reinvented over and over.
There's basically a magical girl for every style you can imagine.
And often magical girls do come tied to animals, it's not uncommon at all.
So I'd go for a magical girl sea angel.
As for outfit perhaps something like this could work out? Like I said earlier sweaters or other dresses can work out well, and if she was a magical girl or sea angel themed it would be worth trying to work in some aspects that are usually associated with those into the design too. And it would need to feel "vtuber" like, which is a tricky thing to do. In general vtuber designs are built to stand out more than regular cloth. But a lot of that is done through color combination and by integrating a theme into the outfit.
