This Is How Allison Williams Knew She Should Get Married in an Oscar de la Renta Gown

When you're a star who's walked down plenty of red carpets in gorgeous, floor-sweeping gowns, you've probably had a few favorite fashion moments. We imagine that for Allison Williams, many of those involve Oscar de la Renta dresses. The Girls star has worn the label's elegant creations for many events, and when she got married this weekend, Allison chose to walk down the aisle in custom Oscar, designed by Peter Copping. She shared a photo of her white floral embroidered dress on Instagram - a fu...