With her first step at the Costume Institute Gala at the Metropolitan Museum of Art in NYC on Monday, Allison Williams reminded us yet again she's a lot more than Marnie, her character on HBO's Girls. Allison stunned in a svelte melon dress, lighting up the red carpet with her megawatt smile. It's been a hectic professional and personal year since the actress attended the 2013 gala in a sheer gown . In March, she opened up about her surprise engagement  to Ricky Van Veen. Later that month, Allison stepped out with costars  Lena Dunham, Zosia Mamet, and Jemima Kirke. Keep reading to see Allison's latest snaps!