There's never a dull moment in Hollywood. From box office hits to celebrity gossips, entertainment takes a whole new level on this side of town. Every once in a while, celebrities are hit with jaw-dropping scandals, the kind that makes headlines and that won't just go away.

Today, we're taking a look back at the most shocking celebrity paternal scandals to ever hit the industry.

Justin Bieber

The Biebs is well known for being a player, which practically made him an easy target. Back in 2010, a certain Mariah Yeater claimed that she and the "Baby" singer had unprotected sex during his concert in Staples Center. It didn't take long for her to report in a sworn affidavit that Bieber was the father of her three-month old child. Bieber continues to deny the allegations, which he believed to have been concocted to make quick cash.

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Sylvester Stallone

Janice Dickinson was one of the most prominent names in the fashion industry during the '90s. That's why when she took to the tabloids to announce that the father of her child was Sylvester Stallone back in '94 the whole world watched as the news unfold. The "Rocky" actor even tried to make it right by breaking up with then girlfriend, Jennifer Flavin to raise the child with Dickinson, only to find out he wasn't the dad after taking a DNA test.

Keanu Reeves

This story gets weirder and weirder each time we come across with. Back in 2009, a fan named Karen Sala claims that the actor hypnotized her and disguised himself as her ex husband to father her four children. The "John Wick" star claims the entire ordeal was "horrible" and the DNA test proved that he wasn't the father. Eventually, the case was dismissed.

Michael Jackson

To say that the world was shocked when the music legend revealed his very fair children is an understatement. Now that the children have grown, one British actor by the name of Mark Lester claimed that he was the one who provided the sperm for Jackson's son Prince and daughter Paris - just like what Jackson's former dermatologist, Dr. Arnold Klein claimed. No one has agreed to a DNA test so this scandal is still shrouded in mystery.

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Scott Disick

The pair has gone their separate ways for a while now but the two continues to raise their children together. However, a relentless buzz kept swirling in the Kardashian household when a man claimed that he was the father of Mason, not Scott. Kourtney decided to have a paternal test done back in 2013, which true enough, proved that Scott is indeed the father of Mason.

Arnold Schwarzenegger

Who could ever forget the time when actor and California governor, Arnold Schwarzenegger confessed that he had an affair with their former housekeeper Mildred Patricia Baena while his wife was pregnant with their son Patrick. Not only that. He admitted to being the father of Baena's child, which ultimately led to Schwarzenegger and Maria Shriver's divorce.

Jude Law

Everyone felt for Sienna Miller when news confirmed that her ex, Jude Law was having an affair with their children's nanny Samantha Burke. Just when the dust was settling for everyone, Burke claims that Law is the father of her baby, which the actor denied. However, the paternity test proved the actor wrong.