It was her birthday, and she was thriving.

Jennifer Lopez, who is not married to Ben Affleck, honored her impending 55th birthday by wearing a gorgeous floral outfit to a joyous lunch in the Hamptons.

The singer of “On The Floor” was photographed on Sunday dining at Arthur & Sons, an Italian restaurant in Bridgehampton. She was dressed in a Zimmermann crop top ($480) with a white floral print and belted shorts ($540) that matched.

Jennifer Lopez wore a floral Zimmerman set to her birthday lunch on Sunday.

She also wore flower-adorned shoes by Gucci.

The pop star stunned in Chloé sunglasses.

She even kept the theme going from head-to-toe, finishing the look with Gucci platform wedges ($850) that featured intricate rose and poppy detailing.

J.Lo, whose actual birthday is Wednesday, accessorized with a $6,400 floral raffia tote by Dior, blue-hued sunglasses by Chloé ($403 $282) and a gold and diamond lion head bracelet by Van Cleef & Arpels.

As Page Six previously reported, Lopez hosted a posh lunch with family and friends at the Italian eatery where she was seen getting emotional as she told stories of her past.

Lopez carried a flowery Dior raffia purse.

Her lunch was at Arthur & Sons Bridgehampton.

She was joined by her longtime manager, Benny Medina, her 16-year-old twins, Max and Emme, and sister Lynda — though her husband was nowhere in sight amid rumors of an impending divorce.

We’re told the “Marry Me” actress and her group dined on classic dishes like meatballs with ricotta, artichoke alla romano, chicken parm, spicy rigatoni alla vodka, lobster benedict and more.

As for dessert, they indulged in spumoni my way, limoncello cheesecake and mini cannoli.

Her husband, Ben Affleck, did not attend the meal.

The actor was also not present for her “Bridgerton”-themed birthday celebration the day before.

Lopez celebrated her milestone birthday the day before with a “Bridgerton”-themed soirée in the Hamptons, with attendees dressed in ballgowns and tiaras.

Attendees, including Lopez’s mother Guadalupe Rodríguez, were greeted by horse drawn carriages.

Lopez has been galavanting in the Hamptons amid breakup rumors with Affleck.

Lopez was spotted spending the summer with Affleck’s daughter, Violet, last week.

Affleck was again absent because they had been spending time apart.

The couple, who married in July 2022, were not together for their 2-year anniversary last week.

According to Page Six, Lopez celebrated the occasion by dining with her son and assistant at Arthur & Sons while Affleck was in California.

Lopez celebrated her and Affleck’s wedding anniversary without her husband.

Affleck had been in California during their tumultuous relationship drama.

While Lopez continues to strut her stuff in the Hamptons, Affleck has remained across the nation. Last week, the pop star was spotted with Affleck’s daughter, Violet, while bopping around Southampton, New York.

The Oscar winner has three children with ex-wife Jennifer Garner: daughters Violet and Seraphina (15) and son Samuel (12).

Meanwhile, Lopez has twins with her ex-husband, Marc Anthony.