The newly-single Essex star walked the red carpet in London's Leicester Square clad in a beautiful floor-length black gown from Debra Chigwell boutique.
Very Hollywood glam!
Like us, Jess is clearly a major fan of The Hunger Games series and its leading lady, tweeting before the event: "Very excited for The Hunger Games premiere. Love these films and Jennifer Lawrence."
Last night marked the premiere of the third movie in the series, Mockingjay Part One. It follows on from The Hunger Games and Catching Fire.
The franchise will conclude with a fourth movie, Mockingjay Part Two.
Jessica walked the glam red carpet alongside a bevy of Hunger Games stars including Oscar winner Jennifer Lawrence, leading men Liam Hemsworth and Josh Hutcherson, and other stars of the movie Sam Claflin, Elizabeth Banks, Donald Sutherland, Jena Malone and Natalie Dormer.
Also in attendance were TOWIE pals Sam Faiers, Ferne McCann and Charlie Sims, as well as the likes of Katie Price, Lorde, Alexandra Burke, Gary Linekar and the X Factor contestants.
That's some guest list, right?!
More red carpet pictures:
Copyright: WENN Mario Mitsis
The Hunger Games: Mockingjay Part One is released in cinemas on 20 November.
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