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Claire Danes literally lit up the Met Gala last night in a gown designed by Zac Posen.

Not only was the "Homeland" actress serving up 21st Century Cinderella vibes in her gown, but the dress itself was equipped with custom fiber-optic lighting:

The Met Gala has become one of the biggest red-carpet events of the season, with top models, politicians, singers, actors, and even the Kardashians flocking to the festivities. But perhaps no one embodied the theme of this year’s gala (technology) better than Danes, who arrived for this year's "Manus x Machina: Fashion in an Age of Technology" exhibit in Posen's brilliant ball gown.

Keep scrolling for a few more photos and videos of the coolest dress from this year’s Met Gala: