Rylan's had quite the transformation since his 2012 X Factor days but the biggest change is definitely his teeth.

After finding fame on Signed by Katie Price, the X Factor and Celebrity Big Brother, Rylan got veneers. He's since toned them down because at one point they were VERY bright.

Just like the rest of us, Emma Watson's teeth were... normal back in her Harry Potter days. Bless her.

Unlike a lot of other celebrities who have had quite a transformation since they first found fame (no shade), Emma pretty much looks the same. Although she's definitely straightened a whitened her teeth.

James Arthur wowed everyone with his voice back in 2012 so much so that he only went on to win the X Factor.

Fast forward and he's only gone and got new teeth; they're looking whiter and brighter and judging by this snap he looks much happier.

Aww teenage Niall Horan was very cute. This snap was taken shortly after he found fame on the X Factor back in 2011.

Not only has his hair colour changed but his pearly whites looks a little different too. Niall didn't get veneers though, he got braces like the rest of us average folk.

We're absolutely obsessed with Cheryl's makeup here (can you blame us?). Also after seeing this throwback snap it's very clear that she's had quite the transformation with her teeth...

The glam Chezza we know and love looking gorgeous in 2019. We're very jealous of her straight white teeth - fancy giving us your dentist's details, Chez?

Another celebrities makeup we're obsessed with? Tulisa. She's definitely made quite the transformation since her N-Dubz days.

Long gone after her natural teeth and hello bright white and straight teeth. We're also loving the hair in this picture.

Has Victoria Beckham ever looked happier? This snap was taken back in 1997 when she and the rest of the Spice Girls met Nelson Mandela.

It's actually quite the task trying to find a photo of Victoria Beckham smiling WITH her teeth showing. However here's a glimpse at her new pearly whites.

This adorable snap was taken back in 1997. Very weird when you see a celeb looking very normal and relatable - her teeth, crop top and huge tattoo on the arm.

The Spice Girls finally reunited in 2019 and here's a photo of Mel C rocking her fabulous new teeth.

OMG. Miley Cyrus - aka Hannah Montana - looks so cute in this photo. Look at her little teeth - bless her.b

After leaving her Disney persona behind her, shaving the sides of her hair and twerking on stage, Miley has changed quite a bit over the years. We love this photo purely for the pose and of course her fancy teeth.

Charcoal is stellar for lifting stains from coffee, tea and wine (AKA all the good stuff). It's made from 100% natural ingredients and had hundreds of five-star reviews online. A promising review: "I am genuinely surprised at just how good this toothpaste is. It has definitely whitened my teeth a little but it's how clean and fresh you feel afterwards that's the best bit. My teeth are literally squeaky clean and it lasts all day. "

A hard-working whitening toothpaste created by celebrity dentist Dr Robbie Hughes that promises to whiten your teeth by at least two shades. A promising review: "Has to be the best toothpaste I've ever purchased! The results were immediate and my teeth are gleaming white! Can't wait to purchase other products!"

Eliminates bacteria that causes bad breath and is deep cleaning, leaving your teeth Simon Cowell white. Demi Jones and Mrs Hinch are also fans. A promising review: "I got that sparkling white result after just a couple of uses. I was amazed by the product. I now won't use anything else."

A favourite with the influencer lot, this whitening toothpaste PERFORMS, baby. Expect a sparkly smile in no time. A promising review: "Best toothpaste I've ever used. Removed stains and keeps gums healthy. My teeth have become so much whiter. I was using a paste and mouthwash for sore gums so it does have temporary staining but this stuff had it gone in a day."

Purple pigment is known for brightening hair and skin, but turns out it works wonders for sparkly teeth. A promising review: "Tastes nice, natural minty flavour and last a long time. Very happy with my smile".

Okay, so you think you've tried charcoal toothpaste, but wait until you've tried this from Curaprox. Catch yourself in the mirror and your entire mouth is black - but rest assured - your teeth are left pearly white. A cult favourite. A promising review: "A few weeks back I realised that my teeth were looking dull and stained in photos. I've never got on with any home whitening kits so thought I'd try something different. It's not cheap and you don't get the biggest tune in the world but I have really noticed the results! My teeth have massively brightened up and lots of the staining has gone from my upper front two teeth."

This toothpaste cleverly reacts with the natural light, so you'll get brighter teeth the more you smile. Cheesy, but we can't help but stan. It's also great for those wanting a cheaper alternative. A promising review: "This is the best ever, it works, is brilliant. I will be ordering again, love it, thanks."

This tried and trusted formula is designed to reverse years of yellowing for a shiny, white smile. A promising review: "I have used a couple of tubes over the last few months and I can definitely see a difference in the whiteness of my teeth. The toothpaste tastes pleasant but it's messy as the foam turns bright blue! Effective but not a quick fix. The toothpaste helps prevent new stains forming."

This is formulated with coconut oil, which expertly (and safely) removes yellowing and stains. Perfect for your glow up. A promising review: "Wasn't expecting it to be blue, great taste, great smell and I've heard good things about coconut oil for teeth so wanted to try."