The dress is a beautiful heavy shiny material, maybe satin. My friend who took the photo of me and the dress sort of understood my excitement.
I rarely try clothes on in store, so here is an actual model in the Cue dress.
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While the Cue dress is shorter than Pippa's, the cowl neck, sleeves and skirt is very similar. And for $219, it's accessible. You too can get an (source)

