▲Depp reportedly goes days without showering or washing his hair.

▲Fox confessed she often forgets to flush the toilet, even after going number two! She also said in an interview that her wardrobe on 'Transformers' always smelled like farts.

▲DiCaprio likes to do his part for the environment. Apparently he doesn't like to waste water showering, so he only does so once or twice a week. He also ditched the deodorant.

▲According to her former roommate, the actress used to wax her bikini line on the couch and stuff her bra with chicken cutlets before auditions. In addition, both Alec Baldwin and Jason Bateman have said that she has bad coffee breath.

▲Another A-lister who doesn't wear deodorant. And if that wasn't enough, her former bodyguard claims she'd go days without having a shower.

▲Reportedly the singer once wore someone else's retainer. What's next, sharing toothbrushes?

▲The actor told Esquire Magazine that he doesn't use deodorant.

▲The Hollywood star reportedly wears the same clothes for a number of days in a row. And she doesn't wear deodorant, so you can imagine how that goes.

▲Ke$ha said in an interview that she smells like a hobo and that she's been told she smells bad on several occasions. Once someone told her she smelled like a shrimp on a diaper. She is also known for drinking her own urine.

▲When he's not (infrequently) showering with a lemon and apple cider vinegar mixture, he simply uses baby wipes. Oh, and no deodorant, like many other stars on this list.

▲The actor prefers baby wipes to showers. Even after working out!

▲Courteney Cox’s ex-husband David Arquette once said that she may be pretty, but if she's not on top of it, she smells like a truck driver—and he liked it!

▲Cooper doesn't wash his jeans regularly. He admitted on his own show that he had done it about twice in six months. But it gets even grosser: he reportedly wears the same jeans every day!

▲Gwyneth Paltrow also doesn't wear deodorant. She believes it's a harmful product as it contains aluminium and can give you cancer.

▲Kourtney Kardashian stopped wearing deodorant while breastfeeding. Khloe and Scott Disick eventually told her how bad she smelled in a 'Kourtney and Kim take Miami' episode.

▲According to his friends, Crowe's foul smell is mostly due to his taste for alcohol.

▲The singer confessed on TV that she only brushes her teeth about three times a week. The reason? Because her teeth are very white and because she doesn't like how slippery her teeth feel like when she brushes them.

▲The 'Twilight' star allegedly has a pungent odor. Apparently, she doesn't shower regularly, wash her hair, brush her teeth, or wear perfume.

▲The actor reportedly doesn't like to shower, or wash his hair. He said he only showers when he can't stand the air around him. Reportedly, the 'Twilight' cast and crew suffered a lot with his smell.

▲The actor didn't shower for weeks while filming 'Fury.' Apparently it helped him get into character. The cast and film crew didn't think it was a good decision.

▲Another actor who went a bit too far to get into his character. He went into the woods and didn't shower for days while filming 'Lord of the Rings.'

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The actress reportedly only washes her hair once a month. She's also known to walk barefoot in many places.

Check out some other bizarre celebrity habits.

▲Ellen DeGeneres asked the star to weigh in on the viral Twitter poll asking whether people wash their legs. Swift replied, "I do, 'cause when you shave your legs … the shaving cream is like soap, right?” Wrong! She also appalled fans by admitting to shaving every day.

▲Alicia Silverstone shared a video of her feeding her baby with her own mouth. Yes, just like birds do. She's also not fond of deodorant and has reportedly distracted students in a yoga class with her body odor.

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On August 1 2021 , the 'Frozen' star shared footage to Instagram of husband Dax Shepard questioning her about the used toilet paper he found on the toilet seat. He asks her where she intended it to go, and she laughs and says, "It was dark in here." Shepard replied, "It's dark in here a lot, apparently, because that happens, I don't know—four, five days a week." She also included an audio recording in which she says, "Peeing is such a waste of time, so when I'm in there, I'm just looking to get off as quickly as possible and wrap it up." Her husband followed up with, "And you just let the toilet paper go wherever it goes?" Shepard added, "You have to imagine how many times I've seen that before I decided to say something."

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Upon hearing the news that Matthew McConaughey gave up deodorant 35 years ago, Lizzo shared to her Instagram story on August 20, 2021: “Ok… I’m w him on this one. I stopped using deodorant and I smell BETTER.” McConaughey has long been open about his deodorant-less armpits, ever since he told People in 2005 that he hadn’t “worn deodorant in 20 years." The news started circulating again after 'Community' actress Yvette Nicole Brown opened up about smelling McConaughey when they worked together on 2008's 'Tropic Thunder. Fortunately, his natural scent was not nearly as offensive as one might fear. “He smells like granola and good living. He has a sweet, sweet scent,” Brown said. “That is just him, and it’s not musty or crazy.”

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Katy Perry threw her fiancé Orlando Bloom under the bus for his questionable hygiene habits. “He loves to floss, which thank God, ’cause some partners don’t and it is disgusting,” the singer said of Bloom on the UK radio show 'Heart Breakfast with Jamie Theakston and Amanda Holden' in January 2022. Then she added, “He has brilliant teeth, but he leaves the floss everywhere." Perry said that she often finds the actor's used floss “on the side of my bed and in the car and on the kitchen table” despite there being “bins everywhere," and, you know, despite how gross it is. Host Holden suggested that Perry "train" him to do better, but Perry replied, "Yeah, well, I’ve done my best.”

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The singer reportedly once took her shoes off during a flight, and so many passengers complained of the smell that a flight attendant had to ask her to put her shoes back on. She also reportedly eats meals in bed and doesn't wear deodorant.

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Joe Jonas revealed a smelly story that took place in front of thousands of people. Few years ago, while performing on stage, the Jonas Brothers member pooped his pants. Speaking on KIIS FM's Will & Woody radio show on July 14, he said, "We were just talking about how there is a point in your life where, as an adult, you can remember the last time you [poop ] your pants," Joe said "Let's just say it was a bad day to choose to wear white clothing."

And he gave details. "You think it might be a little toot, it might've been a little something else, a little something extra," the 35-year-old continued. "So it was like a mid-wardrobe [poop] change during the set." He said the mid-show wardrobe change was definitely caught on camera, "and it was maybe a little bit like, ‘Oh that was an interesting choice to change clothes that quickly,'" he continued. "That's a story I've never told and also that's just real life."

As for whether it left a lasting stain on his mental health? "I've been able to work through it," he joked, "a lot of therapy." He said it turned out not to be as big of a deal as he feared. "It was a light one, it wasn't a full, so I was able to tell the tale."

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A reporter said the singer's smell reminded her of a 12-year-old girl’s bedroom. But it gets weirder—according to Aguilera's childhood friends, she smells like hot dogs!

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When we see celebrities on the red carpet looking flawless, it's hard to imagine that some of them have poor personal hygiene. But behind the scenes, many of these stars are not as perfect as they might seem. In fact, many of them stink—literally.

Click through the gallery and get to know them.