J-Lo made a stunning appearance at the well-known party venue, 1Oak in Southampton, where she donned a revealing black dress with sheer detailing that showcased her famous curves. Guests enjoyed gluten-free Summer cocktails by CÎROC Vodka while the popular singer partied the night away, looking effortlessly stylish in the cleavage-bearing and form-fitting frock. The dress featured cut-outs along the sides and under the chest, as well as a mesh detailing running down the side that accentuated J-Lo’s iconic backside.

J-Lo looked stunning in a figure-hugging black dress, flaunting her curves and giving a seductive gaze. The dress featured cut-outs on the sides, adding to the overall allure of her outfit.

Playful: The famous singer and actress confidently flaunted her stunning physique in her forties, not holding back from showing it off. Her highlighted brunette hair cascaded down her shoulders while her skin looked impeccable, with natural but complementary makeup. The daring outfit also made an appearance in Instagram posts by her friends Fat Joe and French Montana, where the latter shared a photo of himself, the singer, Fat Joe, and author Thalía. In another snap posted by Fat Joe, the four friends, including his wife Lorena Cartegena, cozied up for a group picture.

Jennifer had a blast at the party alongside some well-known pals, as seen in this photo from left to right: French Montana, Fat Joe, and Thalia.

J-Lo had some company in a recent photo – Fat Joe’s wife, Lorena Cartegena, and Thalia were also seen standing beside her.

The group consisting of Khloe Kardashian’s former partner French, Thalia, Joe and Lorena appeared to have an amazing time together.

Chilling: Joe shared a snap of himself with the b-day babe J-Lo and Loren Ridinger on his social media account earlier today.

French Montana posted a picture of himself dancing with Jennifer, wishing her a happy birthday and referring to her as his big sister. The caption included the hashtag #southbronx.

Jennifer received aid: With the aid of Casper Smart, Jennifer disembarked from the chauffeured car.

Accompanied by her youthful beau, JLo was delighted to attend the festivities.

Wait a minute: The pair held onto each other’s hands while walking towards the location.

Walking just behind was Jennifer, following Casper who took the lead. On the day of her birthday, J-Lo posted a nostalgic throwback photo from when she was a child, commemorating the occasion. In the snapshot, Jen can be seen wearing a vibrant crimson dress, smiling and posing in front of her white birthday cake adorned with pink frosting flowers. The singer and mother-of-two kept the caption simple with a ‘#TBT.’

From a different angle, we got to see a peek at JLo’s curvaceous physique.

Celebrity spotted: The judge of American Idol was seen walking past a group of fans, keeping a low profile and avoiding attention.

Renowned bums: Jennifer flaunted additional parts of her well-known backside.

French Montana was among the guests who partied at the event. The turnout was quite impressive, with many notable attendees.

Jennifer and her friends were having a blast as they partied inside the luxurious limousine.

Before the bash, Jennifer and Casper had a pre-party celebration for her birthday among their loved ones in Sag Harbor aboard the luxurious Utopia 3 yacht.

The gorgeous woman flaunted her toned legs in a charmingly vibrant set of shorts and matching crop top, indicating that she doesn’t reserve her fabulous fashion picks for evening events alone.

The adorable couple shared a cozy moment while Casper drove them to Jennifer Lopez’s daytime celebration. Later on, J-Lo posted a photo of Marilyn Monroe blowing bubble gum with the words ‘It’s my birthday!!’ on her face. Her on-again off-again partner Casper Smart also expressed his support for the Booty singer through social media by posting a selfie of himself smiling in bed with a wiry beard and a caption that reads ‘Smiling cause do you know what tmrw is???’ The post was made on Thursday.

Throwback moment of celebration: Jennifer took a trip down memory lane and posted a photo of herself as a toddler, smiling brightly while celebrating her birthday on the very same day.

Back in 2002, the music video for the hit song “Jenny From The Block” was released. However, if we compare the old J-Lo from the video to the present-day version of her, it seems like she hasn’t aged a day.

Lopez posted a picture on her social media account of what looked like Marilyn Monroe blowing bubblegum. The words ‘It’s My Birthday!!’ were written on the image, in line with the celebratory mood.

Experiencing enthusiasm: Casper Smart, J-Lo’s partner with whom she has an on-and-off relationship, expressed his excitement for the upcoming significant day through an Instagram post last Thursday. He wrote in the caption, “I’m smiling because do you know what tomorrow is???”