The reality star turned fashion designer drew gasps (of the good kind, obviously!) as she stepped out on to the red carpet in this Hollywood-worthy, silky black gown that drew attention to her enviable curves (hello, cleavage!) and wasp waist.
Jess posed up a storm in the ultra-sassy wrap-over dress that boasted an incredibly high thigh-split a la ex co-star Ferne McCann and teeny tiny spaghetti straps to boot.
The best part? You can snap up an exact match (party season isn't that far away now, girls) from Jess' very own collection for Sistaglam by Lipstick Boutique. Wahoo!
Jess teamed her party-perfect dress with a pair of heels from Jessica Wright Footwear (uh, duh!) but she went all out with an oversized YSL clutch bag that gave her look a fierce edge.
Can we also just take a moment to admire her much darker, tousled hair? Who knew tresses could ever be that glossy, eh? Kudos to hairstylist Hannah Wieteska.
Just last month, Jess - who joined Lydia Bright, Eastenders' Lacey Turner and Georgia Kousoulou at the TV bash - took to Instagram to shut down the bodyshamers after falling victim to a series of negative comments about her (absolutely fabulous, just saying) body.
The star made a point of saying that she is enjoying life to the fullest and that the negative words wouldn't bring her down. In the post, she wrote:
"I've enjoyed my past year and yes i'll be the first to say I have put weight on," she wrote. "I have an extra couple of lbs I'd like to shift but I'm a normal girl and just like anyone my weight fluctuates especially during certain times of the month.
"I've been on holidays, I've had tonnes of cheat meals, I've had more vinos than normal, met amazing people & I wouldn't change a thing. Life is for living and I'm doing exactly that. What kind of message are we sending out to women and young impressionable girls?!? I am by no means fat, I'm a UK size 10 yet I am being body shamed for putting on weight. #EveryBODYisbeautiful."
Jess' post came after Love Island's Rachel Fenton was forced to defend herself against bodyshamers following a bikini snap that racked up a handful of upsetting, "fat" comments.
You tell em, girls!
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