Miley Cyrus went off on a Twitter rant regretting her spontaneous decision to bleach her hair blonde.

The Wrecking Ball star is currently in New York filming an as-yet-untitled TV series from legendary director Woody Allen. And while she had time off from the project, Miley made the impromptu choice to dye her naturally brunette locks in favor of a platinum blonde look - which she now regrets.

The 23 year old took to Instagram on Wednesday (11May16) to share a selfie featuring her blonde locks and brown roots prominently coming in, and wrote the caption, "Bleached my f**king natural healthy a** hair rebelling out of boredom while dealing with a consecutive amount of time off on the Woody project (2 months ago)."

She continued, "Sitting in a random apartment with nothing to do but smoke weed (which I should've just appreciated) and f**k with my hair obvi (obviously), something inside told me I'd regret it.... That hair color comes in a box (well maybe mine) therefore it's available to purchase and what grows from my scalp naturally is mine and and only mine!!!

"Not to mention I felt like a self obsessed psycho while real issues are out there in the world needing to be dealt with I was sitting in front of a mirror going thru strand by strand like my hair and what it looks like actually f**king matters! lol and now I'm out here looking like every Suzy Q & Sally B there is.... Either this s**t needs to grow out at super speed or I'm about to go in for a f**kin hair cut realllllll quick!!!"

Miley went on to encourage her followers to also be true to themselves and not change their looks to fit in with the standards of beauty, adding, "next time you feel that tickle in your belly while making a decision listen to what it says and know the true you can never be replicated or replaced you are the one and only you! So bad a**!

"Ps if you ever start overthinking s**t especially something as silly as hair.... go outside, smell a flower, center your thoughts and find something productive to do with your time.... I wish I would've taken a toke of my own medicine.... Everything is a learning experience.... Even hair."