1. Paris Hilton Frazer Harrison / Getty Images, Emma Mcintyre / Getty Images Then: The entire fake tan aisle at Priceline, tadpole eyebrows and scraps of material that somehow made up a top and skirtNow: Sophisticated businesswoman vibes, looks like she'd smell of success and money. 2. Nicole Richie Evan Agostini / Getty Images, John Sciulli / Getty Images Then: Ruffled boobtube-esque tops in the brightest shade of neon pink, matched with dollar-store extensions and a headband scarf. Now: Boss lady pinstripe suits that scream "What are you looking at, peasant?" 3. Miley Cyrus Bryan Bedder / Getty Images, Neilson Barnard / Getty Images Then: Wholesome yeehaw vibes with some ~rebellious~ emo accessories (peep that studded belt and sequinned vest). Now: A typical yeehaw-into-rocker-chic transition, featuring lots of metal, a smokey eye and "Is this wet or is there just lots of product in this?" hair. 4. Ashley Tisdale Frederick M. Brown / Getty Images, Vivien Killilea / Getty Images Then: Wearing every single trendy thing at the same time, including hot pink faux scarfs, because that's what all the cool kids were doing. Now: Understated glam and sophistication that just DELIVERS. Seriously, what a transformation. 5. Gwen Stefani George De Sota / Getty Images, Dimitrios Kambouris / Getty Images Then: Embracing the whole swimwear as outwear trend, which shouldn't have ever been a thing. Also fishnets, soooo many fishnets. Now: Double denim but fashionable and cute, ya know? And still rocking pumps for that extra height. 6. Christina Aguilera Carlos Alvarez / Getty Images, Matt Winkelmeyer / Getty Images Then: Tops with HUGE personalities. I'm talking stripes, a collar, flared sleeves, button detailing and an abnormally large tie, to boot. Oh, and don't forget the minuscule brows and those damn hats that were so popular during the '00s. Now: [Extreme Tyra Banks voice]: Stripes, but make it high fashion. 7. Beyoncé Frederick M. Brown / Getty Images, Gareth Cattermole / Getty Images Then: Big bangs, tight corsets, velvet skirts and faux fur finishes that added a touch of class. Now: Bold, beautiful and excellent. Enough said. 8. Kim Kardashian Vince Bucci / Getty Images, Nicholas Hunt / Getty Images Then: Layers upon layers upon layers that were secured with a big, ole' chunky belt. Now: A beautiful, living, breathing Barbie doll that has permanent FaceTune. 9. Britney Spears Frazer Harrison / Getty Images, Matt Winkelmeyer / Getty Images Then: Iconic velour tracksuits that screamed leisure, comfort and "I'm much richer than you".Now: Wholesome mum that slips on a killer look every once in a while. 10. Rihanna Kevin Winter / Getty Images, Brendon Thorne / Getty Images Then: A rinse and repeat of crop tops, low-rise jeans and belly chains. Now: Queen of bold looks, fashion excellence AND big hoop attitude. 11. Anne Hathaway Evan Agostini / Getty Images, Jon Kopaloff / Getty Images Then: Your typical English schoolteacher mixed in with notes of bookish librarian. Now: A more mature, refined look that is befitting of the queen of Genovia. 12. Jennifer Lopez George De Sota / Getty Images, Angela Weiss / AFP / Getty Images Then: Midriff-baring, bedazzled ensembles that paid homage to her hip-hop roots.Now: EXTREMELY glam, EXTREMELY expensive and EXTREMELY out of everyone's league. 13. Lindsay Lohan Matthew Peyton / Getty Images, Cindy Ord / Getty Images Then: I saw Lindsay wearing a trucker hat, flared jeans and carrying a mini purse, so I bought a trucker hat, flared jeans and a mini purse. Now: An unbothered Greek goddess who laughs at you every time she collects a pay cheque. 14. Cameron Diaz Frederick M. Brown / Getty Images, Matt Winkelmeyer / Getty Images Then: Abstract art-inspired skirts paired with extremely random belts and slightly see-through tops. Now: An actual living, breathing angel. 15. Jessica Simpson Robert Mora / Getty Images, Dimitrios Kambouris / Getty Images Then: The popular girl at school.Now: The popular girl at school who mellowed out and is now probably addicted to candles and "Live, laugh, love" quotes. 16. Kelly Clarkson Robert Mora / Getty Images, Ethan Miller / Getty Images Then: Small town girl who threw on a casual hippie-inspired look for an extremely formal event. Now: Dressing every bit the part of an iconic singer. 17. Ashlee Simpson Frank Micelotta / Getty Images, Kevin Winter / Getty Images Then: Every single texture, fabric and layer you could possibly think of thrown together in one outfit.Now: IRL Gossip Girl chic. 18. Mischa Barton Frederick M. Brown / Getty Images, Antony Jones / Getty Images Then: Fresh-faced teen that's just spent their pocket money on a new look at Target.Now: Channelling the elegance of old school Hollywood. 19. Hilary Duff Scott Gries / Getty Images, Jon Kopaloff / Getty Images Then: Skinny scarves that served absolutely no purpose and a whole can of hairspray to control that slicked back pouf. Now: Big "I've got my shit together" energy as seen by the matching boots and belt. 20. Fergie Mark Mainz / Getty Images, Valerie Macon / AFP / Getty Images Then: LOOK! AT! MY! ABS!Now: I'm still top shit and I know it. 21. Pink George De Sota / Getty Images, Jeff Spicer / Getty Images Then: A whole lotta midriff and attitude. Now: The cool mum who has a ~rebellious past~ and doesn't get mad if you come home a little past your curfew.