simple column of purple silk

[Tinkerbell]

They’d tried on their costumes earlier, and while they’d both looked great—Nick in a white doublet, flowy shirt, and black pants, Daisy in a simple column of purple silk—I’d had no idea who they were supposed to be.

What kind a dress is it? She only wrapped the fabric around her like ancient women's dresses? Or it'a simple purple, long and maybe a sleeves dress?

[Tullia]

They’d tried on their costumes earlier, and while they’d both looked great—Nick in a white doublet, flowy shirt, and black pants, Daisy in a simple column of purple silk—I’d had no idea who they were supposed to be.

What kind a dress is it? She only wrapped the fabric around her like ancient women's dresses? Or it'a simple purple, long and maybe a sleeves dress?

simple purple, long and maybe a sleevless dress

^ that sounds like a pretty good description to me