Jennifer Lopez shared a picture of her sexy bikini body while lounging poolside with pal Leah Remini; "#notmad #loca #loveher," Lopez wrote of the actress. Credit: Courtesy Jennifer Lopez

Jenny from the Block… lookin' hot! Jennifer Lopez stripped down to a skimpy bikini while lounging poolside in the Hamptons on Monday, July 21. The picture, taken by Lopez's best friend Leah Remini, was posted to the global singing sensation's Instagram account alongside its backstory.

"She yelled at me 'DONT MOVE!'" Lopez, 44, recalled. The sexy bikini photo features Lopez wearing a hazelnut color bikini, hoop earrings, and a straw fedora, while reclining against a white chair. The American Idol judge flashes a big smile as she rests one hand against her thigh. "Another shot by Remini... #shemakesmelaugh #notmad #loca #loveher #shesgettinggoodatthis."

The busy "Luh Ya Papi" hitmaker and longtime bestie Remini have been relaxing at her Hamptons home as part of her 45 birthday festivities, which Lopez will celebrate Thursday, July 24.

A source told Us Weekly that the pair dined at Nick & Toni's last Saturday, July 19, while Entourage stud Adrian Grenier and Howard Stern dined nearby.

Remini has become Lopez's personal photographer of sorts since landing in the luxurious East Coast destination. Last Friday, July 18, Lopez shared another outdoor bikini snap of herself, which was also taken by Remini. "My friend took this pic. And made me post it! Guess who? @leahremini #vacation #summertime #feelingrelaxed #backtoworksoon."

While the two are besties, Remini managed to call Lopez out that same day …for being so darn stylish. The King of Queens star, who grunged it in a baseball cap for a lazy day by the pool, found Lopez in a chic silk head scarf and other girly accessories. "Can you be ugly once?" Remini yelled to her pal. "Can you be normal?… You're such a jerkoff!"