Bring on the sparkle!
The floor-length dress featured navy sequins and a low back and and hugged the "Homeland" star's frame beautifully. But our favourite part of the gown? The gold chain strap details -- adding a touch of badass chic to what would have been a simply pretty dress. A perfectly coiffed bob, lush lashes and dewy skin completed her showstopping look.
According to the 36-year-old actress, she didn't choose the dress -- it chose her.
"It leapt off the rack, and it fit," the Best Actress in a Drama Emmy nominee dished to Ryan Seacrest on the red carpet.
And joining Claire on the red carpet was hubby Hugh Dancy, who looked dapper in a black tux with a black bow tie.
Talk about a hot couple!
Check out more photos from the 2015 Emmys below: