Just hours after revealing to the world that she and beau Ryan Reynolds are engaged, actress Scarlett Johansson was showing off her brand spankin’ sparkler.

Johansson flashed her new bling – a massive diamond solitaire engagement ring – as she walked the red carpet at the Costume Institute Gala in New York City earlier this evening.

Her new fiance, Ryan, couldn’t attend, as he’s currently on location filming The Proposal, so the Match Point star (and her ring!) was escorted by fashion giants Stefano Gabbana and Domenico Dolce.

[Source]