Kylie Jenner, perhaps the greatest mastermind of a changing look, took some time to confess to getting fillers at the age of 15.
Eventually she explained she wanted to deal with an insecurity over her thin lips and went on to cash in on her new look with a range of lip kits. Fast forward to 2019 and the business venture has made her the world's youngest "self-made" billionaire.
Kendall
The self-professed tomboy of the family, while tabloids have claimed she's had lip fillers too, Kendall is clearly more of a Jenner than a Kardashian in her physique and has found her own fame as a top model, landing gigs as the face of Elizabeth Ardern and Coach.
Khloe's look has changed dramatically since Keeping Up With The Kardashian's took off in 2007. By 2009 she was sporting a more refined image and a few blonde highlights in her dark hair. Fast forward to 2014 and the Kardashian had gone completely blonde, split from Lamar Odom and began pursuing a health and fitness regime which she also cashed in on by way of her series Revenge Body.
Most recently fans have voiced concern that she's gone too far in making alterations to her image.
Pictured above in 2006 and 2019, the first breakout star of KUWTK has slowly but surely altered her appearance over the past 13 years, championing a universal trend in curvier figures along the way.
While she's admitted to Botox, she's previously refuted having a nose job and says the proof will be in the faces of her children.
Kourtney
The big sister of the crew, Kourtney celebrated her 40th birthday this year. She revealed to E! that she had breast implants while in college but now espouses a more natural approach to her appearance, largely via her lifestyle brand Poosh where she promotes the health benefits of things like dry brushing your skin and starting the day with a cup of collagen.
Kris
The Kardashian Momager is a pretty hip looking 63-year-old. Pictured in 2008 and again this year in June, the stress of wrangling five famous daughters certainly hasn't been allowed to show on her face. She admitted to a neck lift in 2011 and says she had breast implants in the 80s "after four kids".