Britney Spears is feeling the disrespect.
The pop singer seemingly clapped back at her ex Justin Timberlake after he appeared to reference her during his Wednesday night performance at the opening of the Fontainebleau in Las Vegas.
Before launching into his debut solo album hit “Cry Me a River” — which is thought to be about Spears cheating on him — he told the audience, “No disrespect.”
Spears, 42, took to Instagram Friday afternoon to seemingly shade Timberlake, also 42.
Not only did she gloat about beating him when they played basketball during their three years together, but she also shaded him for crying about it.
“Psss I never mentioned how I beat him in basketball 🏀 and he would cry,” she wrote in a lengthy caption that also spoke about her scrapped “Make Me” music video from 2016.
Spears didn’t directly reveal whether her caption was about Timberlake, but the “no disrespect 🤷🏼♀️🤷🏼♀️🤷🏼♀️ !!!” message at the end of her post seemed like a direct response to his Vegas performance.
The singers were the “it” couple of Hollywood between 1999 and 2002. Their breakup year was the same year “Cry Me a River” and its accompanying video was released, which showed a Spears look-alike being unfaithful.
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Spears admitted to cheating on Timberlake with dancer Wade Robson once during their romance in her memoir, “The Woman in Me.”
“We were out one night and we went to a Spanish bar. We danced and danced. I made out with him that night,” she recalled.
However, she also wrote in her bombshell book that the Grammy winner cheated on her “a couple of times” — including with another celebrity.
“I was so infatuated and so in love, I let it go, even though the tabloids seemed determined to rub my face in it,” she penned.
Spears added, “When *NSYNC went to London in 2000, photographers caught him with one of the girls from All Saints in a car.”
“But I never said anything. At the time we’d only been together for a year.”
Spears also noted that after their separation, Timberlake’s “Cry Me a River” painted her to look like a “harlot who’d broken the heart of America’s golden boy.”
“I felt there was no way at the time to tell my side of the story,” she remembered.
“I couldn’t explain, because I knew no one would take my side once Justin had convinced the world of his version.”
“I don’t think Justin realized the power he had in shaming me. I don’t think he understands to this day.”
Timberlake has not publicly addressed the “Gimme More” hitmaker’s claims, but he did turn off his Instagram comments after his posts received hundreds of hateful messages following the release of the memoir — which included the allegation that he successfully encouraged Spears to abort their accidental pregnancy.
However, a person close to Timberlake revealed in October that he was “not at all happy” about Spears’ inclusion of their past in her book.
“Justin has not reached out to Britney at all about any of this, and he is not going to because there is nothing he can say to her,” they added.