▲Back in 2016, the actress visited court to testify against Dante Soiu, whom she claimed had stalked her for 17 years.

▲Paltrow reportedly purchased a guard dog, to protect her from the following threat. She apparently received more than 60 letters from Soiu.

▲Lohan was robbed by the Bling Ring back in 2009. The celeb testified to a grand jury that she didn't feel safe after teenagers burgled her home.

▲Lindsay Lohan has had a fair few run-ins with the law, but has also testified against criminals who have wronged her.

▲George Clooney has a high-profile lawyer wife, and has been involved in some important cases over the years.

▲Miller was cross-examined, and testified that she did not have a relationship Daniel Craig.

▲Sienna Miller was embroiled in the sticky phone-hacking scandal, conducted by the News of the World.

▲Alec Baldwin has broken the law a handful of times over the years. In 2013, he testified against an accused stalker by the name of Genevieve Sabourin.

▲In 2010, he testified against people who were jailed for using Clooney's name to launch a fashion line. In 2012, he was called to testify in the trial of Prime Minister Silvio Berlusconi.

▲The actress claimed that she had an affair with Alec Baldwin, who denied the claims. The stalker was found guilty, and sentenced to six months in jail.

▲Paris Hilton has been in and out of court many times. She was also burgled by the Bling Ring, and testified against them.

▲The child actor testified in the world famous Michael Jackson case in 2005. Culkin was a close friend of the King of Pop.

▲Culkin testified in support of Michael Jackson, who was eventually found not guilty on all charges.

▲You might not have expected it, but Naomi Campbell testified at a war crimes trial in 2010, which involved Liberian President Charles Taylor.

▲The TV host and supermodel appeared in court back in 2009, to testify against Brady Green, an alleged stalker.

▲Green had apparently brought Banks dozens of roses, and threatened to kill a producer who was working with her.

▲She also testified against Nathan Parada, who was found guilty of breaking into her home, wielding a knife.

▲Taylor stood accused of war crimes, like murder and using child soldiers. Campbell distanced herself from the leader during her testimony.

▲Jennifer Hudson took the witness stand in 2012, to testify in a gruesome case that was very close to home.

▲Hudson's mother, brother, and nephew were all killed by her former brother-in-law, William Balfour. He was given three life sentences.

▲Michael Jackson's daughter, Paris Jackson, was summoned to testify in her father's wrongful death trial.

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Fiery chef Guy Fieri was involved in an important case back in 2013. He testified in an attempted murder trial.

A teen named Max Wade allegedly stole Fieri's Lamborghini outside of a dealership. A year later, the suspect attempted a drive-by shooting, and was sentenced to life imprisonment.

▲The year was 2001, and Kutcher was becoming a star. He was already cast as Michael Kelso, one of the lead roles in 'That '70s Show.' He also played Jim Morrison in 'Down to You,' and the hilarious Jesse Montgomery III in 'Dude, Where's My Car?'. Before his fairy-tale marriage with Mila Kunis, and his long-running relationship with Demi Moore, Kutcher was a Hollywood bachelor.

▲Jackson couldn't appear in court, as she was being treated in the hospital. Her deposition was used as testimony against Conrad Murray, who was convinced of involuntary manslaughter.

▲The retired NBA star testified to a grand jury in 2003, claiming that he used a substance given to him by a trainer.

▲Ashley Ellerin was in a different phase of her life. Single too, but not nearly as successful as Kutcher, instead she was working her way up as a fashion student. She worked part-time as a stripper to make extra money. After meeting each other in 2000, they made plans again. Kutcher was to take Ellerin out to a Grammys after-party, living it up with L.A.'s elite. When the actor arrived to meet Ellerin, the door was left unanswered. Kutcher looked through the window and saw what seemed to be a pool of red wine on the floor. Kutcher left, assuming she had just blown him off, but the young Ellerin was later discovered murdered in her home.

Michael Gargiulo stands accused as the Hollywood Ripper, an alleged serial killer with many young bodies to his name. Specifically, Garguilo has been accused of killing three women, and attempting to murder a fourth.

▲The trainer was accused of distributing steroids, but Bonds couldn't confirm this 100%. Bonds was eventually convicted of obstruction of justice.

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The two assistants were accused of embezzling thousands of dollars on company credit cards. Lawson admitted to using drugs at the time, and the assistants were found not guilty.

Also see the celebrity lawyers that are out there.

▲Nigella Lawson is a big celebrity chef back in the UK. In 2013, she was embroiled in a fraud trial against her former personal assistants.

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Court can be a scary place, even for a celebrity. No one's truly above the law, and many celebrities have been sentenced to prison by judges around the world. That said, celebs have also helped out at criminal trials too.

Leonardo DiCaprio is one such case, as he took the stand on April 3 as the first A-list witness in the star-studded trial of former Fugees member Pras Michel. Michel is accused of participating in a global campaign-finance conspiracy in connection with the 1MDB corruption scandal, funded by Malaysian businessman Jho Low, who allegedly stole billions of dollars from the Malaysian sovereign wealth fund. DiCaprio was testifying to prove that Low used stolen money to hang out with actors, models and politicians in the US, CNN reports, as Low had personally helped fund DiCaprio's films and environmental foundation.

Of course, the actor isn't the first celebrity who has taken the stand. Whether to protect friends, family, or themselves, plenty of celebs have appeared at court to tell the truth, from Macaulay Culkin's defense of Michael Jackson to Naomi Campbell's testimony at a war crimes trial. Click on to meet the other celebs who have testified at court.