The New Year's Eve actress looked drop-dead gorgeous as she stepped out at the Guggenheim International Gala, held at the Guggenheim Museum in New York last night (7 November).
The lavish event was made possible by Dior, so it was only fair she wore a gorgeous dress by the designer!
Jess opted for strapless couture number, which featured a tiered skirt with white and lavender panels.
The corset-style bodice highlighted her tiny waist while the yellow neckline added a pop of colour to her elegant ensemble.
And she proved her fashionista credentials by matching her shoes to her frock, rocking pointed heels with bright neon accents. We want!
Her long brunette locks were styled in soft waves and draped over one shoulder to reveal her bejewelled earrings.
The Hollywood actress - who is married to Justin Timberlake - completed her look with a textured navy clutch while flaunting her eye-poppingly large wedding ring.
What a lucky lady. We're not jealous at all, honest!
What do you think of Jessica's dress? Let us know by commenting below as the best comment across the site each week wins £50!
Got an iPad or iPhone? Reveal Mag is specially designed to fit!