Kylie Jenner rivals big sister Khloe Kardashian in the BLONDE hair department

Kylie Jenner has revealed she's spent months wearing wigs - which we knew already - in order to get her locks super healthy so she can go blonde.

The 18-year-old recently wore a blonde wig for her birthday earlier this month, causing a bit of speculation that she went blonde, but now the reality TV star has gone and got the real deal.

She's not only got rid of her natural darker locks, but she's added extensions, rivalling her older half sister, Khloe Kardashian, who already has long, blonde hair.

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Sharing a picture on Instagram, Kylie wrote: "Took months of not dying my hair and wearing wigs to get my hair back to health so I can do this!!

"Thank you @priscillavalles @maishaoliver for putting up with me all day. I'm going for an ashy dirty blonde for the fall. But this sh**s a process! I'm coming for u khloé!"

Khloe went completely blonde in May and is still rocking the lighter locks, while Kim Kardashian went blonde - PLATINUM blonde - for like a day, showing off her look at Paris Fashion Week earlier this year.

And more recently pregnant Kim said she misses her shorter hair.

It's great being kept informed of the hair-stories from the Kardashian/Jenner girls.

So now Kylie, Kim and Khloe have gone/are going through a blonde phase, we wonder if their sisters Kourtney Kardashian and Kendall Jenner will do the same at some point?

Kim Kardashian as a blonde: