Jen took a leaf out Tay Tay's book for at the star studded bash that drew in the likes of Jessica Alba and Caitlyn Jenner, and poured her slender figure into this standout, all-black two-piece which boasted a bandeau top and an eye-wateringly high thigh split skirt.
Er, can we just take a second to marvel over those perfect pins?!
Last week at the Grammy Awards, pal Taylor Swift wore a very similar (if not strikingly bright) getup, but it's Jen that wins in the style stakes thanks to her classic sweetheart neckline and silver chain detailing - just gorgeous.
Jennifer teamed her sleek and sultry two-piece with a pair of silver strappy sandals and a studded boxy bag but it was her hair that drew the most gasps.
Oh the good kind - duh!
J-Law made everyone stop and stare with her newly cropped tresses which she wore in a super straight, blunt style having given her curling tongs the elbow - and we adore the edgy look on her!
Just a swipe of peachy-nude lipstick and a smudge of black kohl around her eyes was all she needed to stand out from the rest of the celebrity guests who also partied well into the early hours.
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