Accessorising the floor-length design with Cartier jewels and a you-know-I'm-a-diva *snaps fingers* beehive, the singer channelled classic old-school Hollywood glamour at the ceremony in Los Angeles, where she took away the Best Original Song award for 'Skyfall'.
Following the announcement of her triumph, she said: "I feel excited, a bit over-excited! It's my first night out since I had my child."
She added she wasn't "ready" to reveal the name of her baby son yet because it was "too intimate", and said - when asked where she gets her inspiration - that it "usually comes from heartbreak but I don't think I'm ever going to be devastated again."
The 24-year-old commented on the red carpet that having a baby is "lovely" and admitted she was "thrilled" to be nominated for her soundtrack to the latest James Bond film Skyfall, adding, "I couldn't have asked for more".