▲Back in the days when Miley Cyrus was not legally allowed to swing on a wrecking ball.

▲The man with one of the best storytelling voices in Hollywood didn't always have teeth to match his status.

▲Bowie had very peculiar teeth. His dental transformation was gradual, but he ended up with a pristine smile in the end.

▲Madonna has never had the most perfect smile in the world, staying faithful to her gap throughout the years.

▲Back in the '90s, soccer star David Beckham's teeth were somewhat wonky.

▲Aussie actress Nicole Kidman's teeth had a different shade of white back then. Or shall we say yellow?

▲Kidman's husband Keith Urban also looked a bit different a few years ago.

▲Lindsay Lohan's teeth used to be discolored and chipped.

▲Cruise went through numerous dental surgeries over the years.

▲As charming as he looked back then, Clooney's smile was not really the same.

▲The Hollywood heartthrob used to have quite uneven teeth, and a noticeable gap.

▲Early on in his career, soccer icon Cristiano Ronaldo didn't have a superstar smile.

▲We're glad that Niall Horan found the directions to a good dentist.

▲Anna Paquin is comfortable with the gap in her smile. She even said in an interview that she doesn't really care about her teeth.

▲French actress Vanessa Paradis has also embraced her gap. She even claims it's useful to spit water!

▲Reportedly, Charlie Sheen turned to gold teeth to replace teeth damaged by years of drug and alcohol abuse.

▲The rapper has undergone numerous dental surgeries to fix his uneven "Bugs Bunny" teeth.

▲Steve Buscemi's misaligned teeth are part of his image. He even said in an interview that fixing his teeth would have an impact on his career.

▲This is how the singer's teeth looked before she found crossover success.

▲Cheryl has not always looked like a perfect pop star. In the early days of Girls Aloud, her teeth were anything but perfect.

▲Not even Harry Potter was able to find actor Matthew Lewis a spell to fix his teeth in the early days.

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We wonder if the stunt performer attempted one of his gags at the dentist while fixing his teeth.

▲The actress was known as a star who hardly smiled on the red carpet, so even though the feature she once celebrated as her "only talent" is gone (she could fit US$1,100 in cash in her gap), at least we can expect more unabashed smiling.

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Michael Strahan, the NFL legend, decided at 49 years old to close his iconic tooth gap. He teamed up with Smile Design Manhattan and posted a video on Twitter of his procedure. He admits he didn't discuss the procedure with anyone because he knew people would try to talk him out of it, and at the end of the video he loves how the closed gap looks. Apparently it's a temporary solution using a removable dental piece, but fans on Twitter were sad to lose a gap-tooth icon.

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Celebrities have every single part of their bodies under scrutiny, and their teeth are no exception. While many stars got themselves pristine Hollywood smiles, others have embraced their imperfections and challenged the status quo.

Take a look at these celeb smiles.

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Remember when Sporty Spice rocked her iconic gold tooth?