The Sin City actress is our go-to girl for chic evening outfits, and she totally hit the mark in a sophisticated burgundy cut-out dress by Cushnie Et Ochs, complete with pretty beaded embellishment.
But aside from gawping at her toned midriff (so unfair!), we couldn't help but stare at her glowing skin and smoky eye make-up.
The starlet smouldered with a blemish-free complexion and chiselled cheekbones, plus a plump, glossy pout.
Her chocolate peepers were defined with hints of plum and brown and she showcased mega-watt lashes and perfect brows.
And, luckily for us, Jess' make-up artist Monika Blunder was kind enough to post a quick Instagram snap of the products she used to create her gorgeous look. Hooray!
First up, for her skin Monika used Yves Saint Laurent Touche Éclat Foundation, £30.50, which is loved by A-listers for its ability to even skintone and create a dewy finish (try Bourjois Happy Light Foundation, £11.99, for a cheaper alternative).
We also spy the Real Techniques Stippling Brush, £11.99, which can be used to stipple and buff liquid foundation into the skin for a flawless look.
For those sultry eyes, Monika blended together a few different shades from a range of products. The luxe quad is Tom Ford Eye Colour Quad in Lavender Lust, which retails at a whopping £62 (yes, really!)
For a more purse-friendly option, check out Avon True Colour Eyeshadow Quad in Purple Haze, £9.
She also used a single warm-toned brown eyeshadow by Bobbi Brown, £17, plus Smashbox Photo Op Eyeshadow Trio, £21 (try the shade Sepia).
It looks like Monika applied burgundy red cream bases to Jess' peepers too - get the look with Maybelline EyeStudio Colour Tattoo 24hr Cream Gel Eyeshadow in Metallic Pomegranate, £4.99.
And for her fluttery lashes, Monika opted for individual falsies secured with the best lash glue in the business; DUO Adhesive, £10.
What do you think of Jess' make-up look? Let us know by commenting below as the best comment across the site each week wins £50!
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