Allison Williams's arrival at the Emmys just took our breath away. The gorgeous Girls star has wowed us before in a ballgown or two, but she may have outdone herself in a strapless bow-trimmed Giambattista Valli  gown that highlighted her tiny waist and sculpted arms — and that's saying something. A princess-worthy dress like this — and a beauty like Allison — needs little else to polish it off, so she added just a pair of sparkly studs to complete the look. Now, tell us, is this the most beautiful gown the star's ever worn?
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