Jennifer Lopez Shares Intimate Pics With Alex Rodriguez From Their Joint Birthday Bash, Flaunts Insane Abs

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Jennifer Lopez is 48 and looking better than ever.

Though the superstar's actual birthday is on Monday, she celebrated early with boyfriend Alex Rodriguez -- who's also celebrating a birthday this week, turning 42 on July 27 -- on Saturday, donning a show-stopping sheer black dress. J.Lo took to Instagram on her big day to share more snaps from their celebration, where her flawless physique was on full display.

... Clearly, J.Lo knows how to make an entrance!

WATCH: Jennifer Lopez and Alex Rodriguez Show Major PDA in NYC

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And she had no problem admitting she was "feeling" her jaw-dropping look, which showed off her incredible abs.

Of course, the A-list couple's dinner and their birthday cake were nothing short of spectacular.

"Celebrating our lives... Happy birthday #birthdaymoment #birthdaygirl #birthdayboy #birthdaybash #birthdayweek," she wrote about a snap of her snuggling into A-Rod's arm at the table.

Throughout the night, the pair showed plenty of sweet PDA.

Instagram
Instagram
Instagram

"In a crowded room but it's just the two of you... #birthdaylaughs #insidejokesallday #team #US," she also Instagrammed alongside a photo of her whispering into her beau's ear.

On Sunday, the couple continued their festivities in Miami, Florida, this time J.Lo sporting all white during their outing at Prime 112 restaurant.

WATCH: Jennifer Lopez and Alex Rodriguez Take Their Romance to the Hamptons With Their Kids in Tow

Last month, Rodriguez got candid about his relationship with Lopez during his appearance on The Tonight Show Starring Jimmy Fallon -- calling the experience "humbling" -- and admitted that fans often mistake him for her security guard.

Watch below: