Celine Dion, Beyonce, Lady Gaga and more stars now and ten years ago

What can change in a decade? Well, quite a lot ... Or, in Reese Witherspoon and Sandra Oh's cases, nothing at all! After the #10YearChallenge went viral on Instagram – and stars took to their own social media for some fun comparisons – we've rounded up our top ten stars and what they look like ten years later, from Golden Globe winner Lady Gaga to industry veterans like Nicole Kidman and Celine Dion.
Click through HELLO! Canada's 10 year challenge to see what a difference a decade makes...
Photo: © Getty Images

Celine Dion
From a lilac minidress to perform in California to a gold-dipped suit in Las Vegas, the Canadian chanteuse's style is as timeless as ever.
Photo: © C Flanigan/FilmMagic, Instagram/@celinedion

Kim Kardashian
If you've been keeping up with the Kardashians for all these years, you'll know that the mother of three has undergone a fashion revolution and switched up her beauty routine. But from New Year's Eve in Las Vegas to the Louis Vuitton fashion show in Paris, Kim's decade-old glow is still intact.
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Viola Davis
The award-winning actress has shined just as bright as her statues all these years, from her bright yellow Friendly House luncheon appearance to glittering bronze perfection at the 2019 Critic's Choice Awards.
Photo: © Getty Images

Lady Gaga
There's no denying that Lady Gaga has experienced quite the transformation over the past decade – and not just in terms of style! The star has traded in her head-turning looks in favour of Hollywood waves and princess gowns, a fitting way to mark her shift onto the silver screen.
Photo: © Getty Images

Reese Witherspoon
We can't believe our eyes – Reese hasn't changed a bit since 2009! The public was equally shocked when she posted her own side-by-side on Instagram, with many comparing her to Benjamin Button and Dorian Gray.
Photo: © Getty Images

Nicole Kidman
If it weren't for Nicole's new hair colour and shift in fashion sense, we wouldn't be able to tell the difference! The Big Little Lies star rocked red hair on the NINE red carpet in 2009, sporting bleached locked and a monochrome gown for the 2019 Critic's Choice Awards.
Photo: © Getty Images

Emily Blunt
Another red-to-blonde transformation! Emily dazzled in black-and-red many moons ago for a screening of her film The Young Victoria. Fast forward ten years and she's up for a Critic's Choice Award for Mary Poppins Returns with old Hollywood waves!
Photo: © Getty Images

Sandra Oh
The Canadian star, who just aced her Golden Globe hosting duties, hasn't changed a bit since 2009. Swapping out a messy bun for chic curls at this year's Critic's Choice Awards, Sandra clearly has a skincare secret and we all want in.
Photo: © Getty Images