The former TOWIE star, 24, unveiled her dramatic new look on Good Friday (3 April).
Boutique owner Amy showed off her changed hair colour in photos uploaded to her social media accounts and fans - and celeb friends! - were quick to share their views.
Before the big reveal, Amy teased her admirers with the message: "SO SO bloody excited for my new @Easilocks today !!!!! #newlook #Watchout #soexcited."
After hinting she was about to ditch her trademark red mane, she then shared photos of her new look alongside messages of happiness about the image overhaul.
She said: "Omg!!! I absolutely love my new colour and extensions... Shane you are the best what you all think ???@easilockshair @shane_o_sullivan #besthairextentions love my new look!!!"
She added: "Thank you so much @shane_o_sullivan for my new hair #goodbyered!!! #easilocks #besthairextentions#nodamage."
Ex-TOWIE star Sam Faiers tweeted her approval, saying: "Love the colour looks gorgeous x."
Meanwhile, one fan said: "Didn't even recognise u but loving the look."
Another gushed: "I love the red on you, but this colour hair also looks beautiful on you!!! Perfect new hair colour choice."
The Jump star Amy got the opportunity to show off her new hair the same night when she attended cousin Harry Derbidge's 21st birthday party.
Looking seriously classy in a nude pink all-in-one, Amy arrived at Sugar Hut, Essex, to help her adored cousin celebrate his big day.
She tweeted: "Happy birthday to my cousin @MrHarryDerbidge. My cousin, my best friend, my everything!! Love you so much #21today."
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