How did she look? Amazing.
Washington's super cute floral print prom dress also deserves a mention. That's an outfit we definitely want in our wardrobes next summer.
She probably wouldn't admit it, but something tells us Heidi secretly wanted to steal the show. A sparkling floor-sweeping gown? It's not exactly subtle, but why shouldn't a girl do everything she can to dazzle on the catwalk?
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