Jennifer Lopez shows major skin in sheer black mini dress at her birthday party

Jennifer Lopez and Alex Rodriguez are celebrating their birthdays in style!

The picture-perfect couple, who have been dating since February, threw a joint birthday party in Miami on Saturday night, and it was J.Lo who stole the show with her super sexy ensemble.

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In an Instagram snap shared by Rodriguez, the "Dance Again" hitmaker dons a jaw-dropping, sheer mini dress that left very little to the imagination. The sultry look featured a giant cutout on her left side and showed off her toned abs. The top half of the look was simply made up of velvet bird detailing that strategically covered her cleavage. She finished the look with giant hook earrings, a bejeweled clutch and black pumps.

For his part, Rodriguez rocked a royal blue suit and an unbuttoned white dress shirt. Clearly, he wanted his ladylove to shine at the joint soiree.

Lopez turned 48 on Monday, July 24, while Rodriguez will turn 42 on Thursday, July 27.

Judging by their Instagram stories, the pair celebrated their big week with a blowout bash surrounded by family and friends.

Earlier this summer, Lopez and Rodriguez took a highly-publicized trip to Paris, where they were seen walking hand-in-hand, making out on their balcony and more.

See photos from Jennifer Lopez and Alex Rodriguez's Paris vacation:

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