I don't mean huge as in "a fabulous phenomenon," I mean the sizing runs HUGE.
I ordered a 0 regular and a 2 petite (they weren't offering a 0 petite) and they're both very, very voluminous.
Too bad, because the fabric is actually delicious: a substantial silk with its satin-y side facing inward. If you're giving this one a whirl, definitely size down.