Say what? 19 & 17-year old Kendall and Kylie Jenner claim their biggest fear is Ageing!

They might be still in their teens but Kendall Jenner, 19, and Kylie Jenner, 17, have revealed that the thing that scares them most is ageing.

Indeed, so scared is the youngest member of the Kardashian Klan of growing older, she is even dreading her upcoming 18th birthday.

Older sister Kendall, meanwhile, says the thought of turning 20 is 'terrifying' and adds that living a 'fast-paced' life scares her. 

Speaking in an interview with the Sunday Times' Style Magazine, Kylie said; 'I'm scared of the day I turn 19. I really don't want to grow past 18.'Sister Kendall added: 'It's scary. Life is scary. It's just scary how fast everything is rolling and you can't stop it. It's rolling right now.'

The two were speaking ahead of the launch of their new Kendall + Kylie clothing collection for Topshop.

Only the second celebrity-designed line to be stocked by the British retailer, pieces in the range are inspired by their Los Angeles home and mostly come in the shape of simple separates.

The move also sees them follow in the footsteps of older sisters Kim, Khloe and Kourtney, who design a Kardashian Kollection for Lipsy and jointly own a boutique named DASH.

None of the three, or indeed momager Kris Jenner, are any stranger to keeping the ravages of time at bay, not least Kim, who reportedly spends £65,000 a year on beauty treatments.

One of her favourites is said to be an £800-a-time facial which uses 24-carat gold and the 34-year-old is also thought to be a fan of £2,000-a-session fraxel laser treatments.

Kylie is also no stranger to cosmetic treatments and recently admitted to having had lip fillers during an episode of Keeping Up With The Kardashians. 

'I have had temporary lip fillers,' she explained in a clip from the E! show, adding: 'It's just something that I wanted to do.' 

Kris Jenner even suggested daughter Khloe Kardashian get a nose job at age nine; Bruce Jenner is currently undergoing gender reassignment surgery.


Oh well!..they are no strangers to PS!