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She's the girl in the fuschia dress in the middle of the front row (sixth from right) of this pic. There was a bigger version in which you can recognize her face, though I think the original poster's taken the entry down from his weibo?
Someone's put up her ID registration pic in this thread awhile ago, along w/ Yang Mi & Tong Liya's, which are supposed to be make-up less? It's one of my favourite pics of her, actually.