Kevin Costner's biggest controversies have been revealed. RadarOnline.com can reveal the Hollywood actor's biggest scandals, including "sexual harassment" allegations, career flops and the messy divorce from his ex, Christine Baumgartner.'Sexual Harassment' AllegationsAs RadarOnline.com previously reported, Costner was accused of sexual harassment in a lawsuit filed by a female stunt double who has claimed she was subjected to an "unscripted rape scene" without any notice in 2023. According to the complaint, Devyn LaBella claimed she "was the victim of a violent, unscripted, unscheduled rape scene directed by Kevin Costner" on the set of Horizon: An American Saga - Chapter 2. LaBella was hired to be the stunt double for the film's lead actress, Ella Hunt. According to the filing, LaBella was on set for a "non-intimate scene" as Hunt's stunt double when the actor allegedly added a scene involving a second actor, Roger Ivens, and directed him to "climb on top of Ms. Hunt, violently raking up her skirt." Costner allegedly asked LaBella to "stand in" for the lead actress "without proper notice, consent, preparation, or appropriate safeguard measures in place." She claimed the scene was not listed on the call sheet, and she "never gave consent."Costner's attorney Marty Singer denied the allegations and claimed the actor "always wants to make sure that everyone is comfortable working on his films and takes safety on set very seriously." He claimed LaBella's allegations are "completely contradicted by her own actions — and the facts." Singer also claimed LaBella approved the scene after it was rehearsed and even gave her stunt coordinator a "thumbs up."Career FlopsIn 1995, Costner's career suffered a massive blow after his box-office disaster, Waterworld. The actor starred in and produced the film, which was controversial even before it was released in theaters. Due to a series of issues — including production setbacks, on-set injuries and a natural disaster — the final cost for the film was a record at the time, $175 million. But the issues didn't end there — the film was labeled one of the worst movies ever made after it was released in the theaters. Unfortunately for Costner, he invested $22 million into the film that ended up being a failure. After that, the bad luck continued with Costner's second directorial gig for The Postman in 1997, which was also a flop at the box office. For the film, he collected a handful of Razzies — including Worst Actor and Worst Director.Messy DivorceBack in May 2023, Costner's ex-wife, Baumgartner, filed for divorce after 18 years of marriage, citing irreconcilable differences as the reason for the split. The former couple finalized their divorce in February 2024 after facing a handful of difficulties in their separation — including child support payments for their three children and the terms of their prenuptial agreement. The split only got worse for Costner because Baumgartner ended up getting engaged to his former friend, Josh Connor, just one year after their divorce was finalized. The news of the engagement reportedly left Costner feeling "sucker-punched" and "betrayed."