Sometimes celebrities have to apologize just like everybody else. But unlike everyone else, celebrity blunders are often public knowledge — which means they have to say "sorry" in a very public way. After all, celebs owe their star status to their fans, and the wrong mistake could destroy their popularity.

That's why we see so many public mea culpas from Hollywood after stars mess up. Dean McDermott recently publicly apologized to his family after a cheating scandal. Shia LaBeouf has been making "apologies" for his increasingly bizarre behavior. And it's only a matter of time before we hear from Justin Bieber! Here are seven celebrities who had to swallow their pride and apologize publicly for their errors.

1. Dean McDermott

Dean McDermott and Tori Spelling Dean McDermott entered rehab after his alleged affairs became public (Photo: Us Weekly).

When US Weekly published a tell-all interview from a woman claiming that she had slept with Tori Spelling's husband, Dean McDermott, the couple seemed to sweep it under the rug for a few weeks. That is, until recently, when McDermott finally came clean and publicly apologized. "I am truly sorry for the mistakes I have made and for the pain I've caused my family," he told People in a statement. "I take full responsibility for my actions and have voluntarily checked myself into a treatment center to address some health and personal issues. I am grateful to be getting the help I need so I can become the husband and father my family deserves."

2. Justin Bieber

Justin Bieber mugshot Justin Bieber’s mugshot following his DUI arrest in January.

Considering his recent arrest, Justin Bieber's public apology for showing up two hours late to a concert in 2013 seems like child's play. At the time fans were extremely upset with the pop star, so he made it a point to make amends on Twitter. "There is no excuse for that, and I apologize for anyone we upset however it was a great show and Im proud of that ... it hasn't been easy with the press at times ... so let me say this, my relationship with the media is not always easy but I'm trying. I never have any intent to upset or let anyone down. And I'm not okay with things being exaggerated. Once again sorry for anyone upset." It's only a matter of time before he is forced to address his latest scandal.

3. Kristen Stewart

Robert Pattinson and Kristen Stewart Robert Pattinson and Kristen Stewart are reportedly still hooking up.

After the cheating scandal heard around the world, the notoriously shy Kristen Stewart shocked fans with a public apology. Stewart was dating Robert Pattinson when she was caught snuggling with director Rupert Sanders, so she did something completely out of character and gave a statement to the press. "I'm deeply sorry for the hurt and embarrassment I've caused to those close to me and everyone this has affected. This momentary indiscretion has jeopardized the most important thing in my life, the person I love and respect the most, Rob. I love him, I love him, I'm so sorry."

4. Reese Witherspoon

 

Throughout her career, Reese Witherspoon has been known as the always super sweet and polite girl next door. That was, until her husband got pulled over for drunk driving. Having had some drinks herself, the petite blonde pulled the "don't you know who I am" card and for some reason told them she was pregnant. Both she and her husband were arrested. Obviously embarrassed, she went on Good Morning America to make an apology. “It’s completely unacceptable. And we are so sorry, embarrassed, and we know better” she said. "We made a mistake and it’s something that will absolutely never happen again. Just bad judgement, you know?”

5. Kanye West

Kanye West Kanye West seemed pretty embarrassed after he interrupted Taylor Swift's acceptance speech at the MTV Video Music Awards.

After Interupting Taylor Swift's acceptance speech at the 2009 MTV Video Music Awards, Kanye West had to make a public apology, and fast. Not only were Swift's fans outraged, but everyone in the music industry was perplexed by his actions. West kind of became a laughing stock for the offense, but he was apologetic. He wrote on Twitter: "I'm sorry, Taylor... We're both artists, and the media and managers are trying to get between us. She deserves the apology more than anyone. Thank you [Twitter co-founders] Biz Stone and Evan Williams for creating a platform where we can communicate directly."

6. Shia LaBeouf 

Shia LaBeouf Shia LaBeouf is now saying that all of his previous antics were simply performance art.

Shia LaBeouf has been making a lot of public apologies for his bizarre behavior lately. First for plagiarizing graphic artist Daniel Clowes' work and again for headbutting someone at a bar. He used Twitter as a platform for his "apologies" but after he sent out e-mails to galleries asking if he could have the space to present his performance art, people started getting suspicious. It seems that LaBeouf's actions are probably calculated as some type of Joaquin Phoenix-esque performance art project. 

7. Paula Deen

After Paula Deen admitted in court that she had used racial slurs and had wanted to throw a highly offensive plantation wedding there was a massive amount of backlash. Deen lost her TV show, stores refused to stock her products, and her restaurants were shut down. Deen released a strange apology on YouTube that was swiftly deleted and then she went on Today and gave a rambling bizarre speech during which she started crying and got visibly angry. Needless to say, it didn't really help.