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.

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Jennifer Lopez and Alex Rodriguez together
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Jennifer Lopez and Alex Rodriguez together
Happy Birthday to Us!!! #leos 🇩🇴🇵🇷 #305
NEW YORK, NY - JUNE 30: Jennifer Lopez and boyfriend Alex Rodriguez seen leaving the Hunter's Point South Park after performing for a Macy's Fourth Of July Fireworks Spectacular on June 30, 2017 in New York City. (Photo by Robert Kamau/GC Images)
Jennifer Lopez and Her boyfriend Alex Rodriguez walk through the park of Jardin des Tuileries and seen taking pictures with the Pyramide of Louvre in Paris, France, on June 18, 2017. (Photo by Mehdi Taamallah/Nurphoto)
NEW YORK, NY - JUNE 30: Alex Rodriguez and Jennifer Lopez seen at the Macy's 4th of July Firework Show at Hunter's Point South Park on June 30, 2017 in New York City. (Photo by James Devaney/GC Images)
PARIS, FRANCE - JUNE 18: (L-R) Jennifer Lopez and Alex Rodriguez are sighted on the 'Ile Saint Louis' near Notre-Dame-De-Paris cathedral on June 18, 2017 in Paris, France. (Photo by Marc Piasecki/GC Images)
PARIS, FRANCE - JUNE 18: (L-R) Jennifer Lopez and Alex Rodriguez are sighted near Notre-Dame-De-Paris cathedral on June 18, 2017 in Paris, France. (Photo by Marc Piasecki/GC Images)
PARIS, FRANCE - JUNE 18: (L-R) Alex Rodriguez and Jennifer Lopez are sighted near Notre-Dame-De-Paris cathedral on June 18, 2017 in Paris, France. (Photo by Marc Piasecki/GC Images)
PARIS, FRANCE - JUNE 18: (L-R) Alex Rodriguez and Jennifer Lopez are sighted on the 'Ile Saint Louis' near Notre-Dame-De-Paris cathedral on June 18, 2017 in Paris, France. (Photo by Marc Piasecki/GC Images)
Jennifer Lopez and her boyfriend Alex Rodriguez (L) and Benny Medina (C) visit The Louvre in Paris, France, on June 17, 2017. (Photo by Mehdi Taamallah/NurPhoto via Getty Images)
Jennifer Lopez in Paris, France, on June 17, 2017. (Photo by Mehdi Taamallah/NurPhoto via Getty Images)
Jennifer Lopez and her boyfriend Alex Rodriguez visit The Louvre in Paris, France, on June 17, 2017. (Photo by Mehdi Taamallah/NurPhoto via Getty Images)
NEW YORK, NY - MAY 08: Alex Rodriguez and Jennifer Lopez leave Carbone on May 8, 2017 in New York City. (Photo by James Devaney/GC Images)
NEW YORK, NY - MAY 01: Jennifer lopez Alex Rodriguez seen out in Manhattan on May 1, 2017 in New York City. (Photo by Robert Kamau/GC Images)
NEW YORK, NY - MAY 01: Professional baseball player Alex Rodriguez (L) and actress Jennifer Lopez leave the Rei Kawakubo/Comme des Garcons: Art Of The In-Between' Costume Institute Gala at the Metropolitan Museum of Art on May 01, 2017 in New York City. (Photo by Ray Tamarra/GC Images)
NEW YORK, NY - MAY 01: Jennifer Lopez and Alex Rodriguez attend the 'Rei Kawakubo/Comme des Garcons: Art Of The In-Between' Costume Institute Gala at the Metropolitan Museum of Art on May 1, 2017 in New York City. (Photo by Karwai Tang/WireImage)
NEW YORK, NY - MAY 01: Jennifer Lopez and Alex Rodriguez attend the 'Rei Kawakubo/Comme des Garcons: Art Of The In-Between' Costume Institute Gala at Metropolitan Museum of Art on May 1, 2017 in New York City. (Photo by Dia Dipasupil/Getty Images For Entertainment Weekly)
NEW YORK - APRIL 24: Jennifer Lopez and new boyfriend Alex Rodriguez seen leaving 'The Sea Grill' at Rockefeller after lunch together on April 24, 2017 in New York, New York. (Photo by Josiah Kamau/BuzzFoto via Getty Images)
NEW YORK, NY - APRIL 24: Alex Rodriguez and Jennifer Lopez are seen in Midtown on April 24, 2017 in New York City. (Photo by Gotham/GC Images)
NEW YORK, NY - APRIL 24: Alex Rodriguez and Jennifer Lopez are seen in Midtown on April 24, 2017 in New York City. (Photo by Gotham/GC Images)
MIAMI, FL - APRIL 18: (EXCLUSIVE COVERAGE) Alex Rodriguez and Jennifer Lopez leaving Prime 112 Steakhouse aftre dinner on April 18, 2017 in Miami, Florida. (Photo by Gustavo Caballero/GC Images)
NEW YORK, NY - APRIL 03: Alex Rodriguez and Jennifer Lopez leave the Solow Building on April 3, 2017 in New York City. (Photo by James Devaney/GC Images)
NEW YORK, NY - MARCH 31: Alex Rodriguez and Jennifer Lopez leave Marea restaurant on March 31, 2017 in New York City. (Photo by James Devaney/GC Images)
Actress Jennifer Lopez shakes hans with Alex Rodriguez before a subway series game between the New York Mets and the New York Yankees at Shea Stadium in Queens, New York on Saturday May 21, 2005. The Mets beat the Yankees 7-1. (Photo by Mike Ehrmann/WireImage)
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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:

24 PHOTOS
Jennifer Lopez and Alex Rodriguez's romantic trip to Paris
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Jennifer Lopez and Alex Rodriguez's romantic trip to Paris
Au Revoir https://t.co/2iXzeMTC74
Jennifer Lopez and Her boyfriend Alex Rodriguez walk through the park of Jardin des Tuileries and seen taking pictures with the Pyramide of Louvre in Paris, France, on June 18, 2017. (Photo by Mehdi Taamallah/Nurphoto)
🇫🇷#baecation2017. SWIPE for more pics
Jennifer Lopez and Her boyfriend Alex Rodriguez walk through the park of Jardin des Tuileries and seen taking pictures with the Pyramide of Louvre in Paris, France, on June 18, 2017. (Photo by Mehdi Taamallah/Nurphoto)
When you find yourself in the prettiest bathroom ever... #vacationvibes #bathroomselfie
Jennifer Lopez and Her boyfriend Alex Rodriguez walk through the park of Jardin des Tuileries and seen taking pictures with the Pyramide of Louvre in Paris, France, on June 18, 2017. (Photo by Mehdi Taamallah/Nurphoto)
When you're having so much fun you just don't give a 🖕🏽Lol... #whocareswhattheyregonnasay #allihave #danceagain #vegas #miami #montecarlo #sttropez #paris
Jennifer Lopez and Her boyfriend Alex Rodriguez walk through the park of Jardin des Tuileries and seen taking pictures with the Pyramide of Louvre in Paris, France, on June 18, 2017. (Photo by Mehdi Taamallah/Nurphoto)
Capturing THE Moment...📷 https://t.co/tJWXVgmsbE
🇫🇷
PARIS, FRANCE - JUNE 18: (L-R) Alex Rodriguez and Jennifer Lopez are sighted on the 'Ile Saint Louis' near Notre-Dame-De-Paris cathedral on June 18, 2017 in Paris, France. (Photo by Marc Piasecki/GC Images)
Taking my bow at the Opera De Monte-Carlo https://t.co/5afYLFSjoY
Jennifer Lopez and her boyfriend Alex Rodriguez visit The Louvre in Paris, France, on June 17, 2017. (Photo by Mehdi Taamallah/NurPhoto via Getty Images)
Jennifer Lopez and Her boyfriend Alex Rodriguez walk through the park of Jardin des Tuileries and seen taking pictures with the Pyramide of Louvre in Paris, France, on June 18, 2017. (Photo by Mehdi Taamallah/Nurphoto)
#ADominicanInParis😘 https://t.co/OftWyc0Wf4
PARIS, FRANCE - JUNE 18: (L-R) Jennifer Lopez and Alex Rodriguez are sighted on the 'Ile Saint Louis' near Notre-Dame-De-Paris cathedral on June 18, 2017 in Paris, France. (Photo by Marc Piasecki/GC Images)
Jennifer Lopez and her boyfriend Alex Rodriguez (L) and Benny Medina (C) visit The Louvre in Paris, France, on June 17, 2017. (Photo by Mehdi Taamallah/NurPhoto via Getty Images)
#EiffelTower https://t.co/I93iArjkdK
PARIS, FRANCE - JUNE 18: (L-R) Jennifer Lopez and Alex Rodriguez are sighted on the 'Ile Saint Louis' near Notre-Dame-De-Paris cathedral on June 18, 2017 in Paris, France. (Photo by Marc Piasecki/GC Images)
https://t.co/bNG479n8MN
PARIS, FRANCE - JUNE 18: (L-R) Alex Rodriguez and Jennifer Lopez are sighted on the 'Ile Saint Louis' near Notre-Dame-De-Paris cathedral on June 18, 2017 in Paris, France. (Photo by Marc Piasecki/GC Images)
Lunch at the Louvre!! #takemeback 🍎 SWIPE for more pics
Au revoir #Paris 🇫🇷
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