Jennifer Lopez has always been one of our biggest girl crushes, for reasons that we think are fairly obvious, but as she celebrated her 46th birthday in New York this weekend, we reckon she's never looked hotter. 

Never one to shy away from daring fashion trends — we're talking THAT green Versace dress among so many others — she's certainly no stranger to flaunting her incredible figure in an array of sexy frocks. However, the dress she chose to dance the night away with her boyfriend Casper Smart and friends in, has to be one of her most eye-popping yet. 

Making what's officially the boldest entrance of all time, J-Lo rocked up to the exclusive 1OAK club in a sheer, cut out AND bodycon dress like it was NBD.

The dress, created by relatively unknown designer Bao Tranchi, features a low cut back, sheer side panels and cut outs to the waist and cleavage, all wrapped up in a silhouette that will require some serious peeling off at the end of the night. We can barely get out of our skinny jeans without falling over, let alone wriggle out of a dress *this* tight without assistance. Especially after a slice of that epic birthday cake.

Needless to say, the singer's figure was up to its usual perfectly toned standards — yep, 46 has never looked so flawless. 

Once inside the bash, Jen spent the entire evening on the dance floor, only taking a brief break to hit the decks alongside the club's resident DJ. As the saying goes, you can take the girl out of the block, but you can't take the block out of the girl...

Of course, no A-list party would be complete without a mammoth selfie session, and J-Lo and her guests certainly did not disappoint. Draped against a gold curtain, the Love Don't Cost A Thing songstress star posed with her arm wrapped around her on-off beau, smouldering at the camera. However, while we were flicking through the rest of the snaps, we spotted a face that proved to be familiar. 

Recognise that girl with the pink hair? No, you're not going crazy. In fact, it's Natasha Beddingfield, sister of Daniel and the ultimate blast from the past. No, really — Natasha and Jen are apparently real life friends. Who knew?! 

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Hollywood is a weird, weird place.