The songstress teamed the little black number with a pair of barely there strappy stilettos and emphasized her enviable figure with an embellished waist cinching belt.
And although Jlo's exact outfit, Versace no less, would almost certainly burn a hole in your pocket, it looks like the high street is quickly following suit (sorry not sorry) with one of our fave high street stores jumping on the tux bandwagon.
We love this copycat Topshop number, £45, complete with wrap over detail and satin lapels. Pair yours with some chunky black platforms to grunge it up a little or keep it classic with some feminine courts to juxtapose the masculine cut.
We're also swooning over this Toppers asymmetric tux dress complete with a pin stripe print, plunging neckline and super cute front zip.
A complete outfit for under £50? What a steal! And if JLo approves...