Independent presidential contender Robert Kennedy Jr. withdrew from his 70th birthday gala on Monday after several prominent celebrities said they would not be attending.

The gala, which is hosted by two political action committees that support Kennedy’s campaign, advertised that The West Wing actor Martin Sheen, singers Dionne Warwick and Andrea Bocelli, and former boxer Mike Tyson would be attending. However, all four have said they will not attend.

Kennedy press secretary Stefanie Spear told CBS the candidate will not attend his birthday celebration on Jan. 22. The gala is expected to take place in Indian Wells, California. Kennedy’s actual birthday is Jan. 17. 

One of the host organizations, American Values 2024, first reported the news of the gala last month, when sharing a Daily Mail article that included the four celebrities as guests. However, Warwick quickly rejected the claim that she would be attending, calling the PAC’s announcement “absolutely ridiculous.”  

Sheen also denied that he would attend the gala in an Instagram post last month, stating that he supports President Joe Biden for president in 2024, along with the whole Democratic ticket.

“I do not endorse RFK Jr. nor will I be attending his party,” Sheen said. 

Other news outlets have been told that Tyson and Bocelli will not be attending the event. However, a representative for Tyson admitted to Page Six that the former boxer was invited to the gala.

Kennedy has appeared as a controversial liberal candidate in the 2024 presidential race. The nephew of the late President John F. Kennedy, RFK Jr. has pushed conspiracy theories over who was responsible for his uncle’s death. He is also controversial over his anti-vaccine stance.

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The presidential hopeful, who initially entered the presidential contest as a Democrat, is a long-shot candidate for the White House. Biden and former President Donald Trump are leading their respective parties for 2024. 

The Washington Examiner reached out to Kennedy’s campaign for comment.