The singer has decided to mark her 25th birthday by trying out yet another new look, and posted a picture of it on Instagram.
"It's my birthday and I'll be blonde if I want to," she wrote.
She later added on Twitter: "I have no signal where I am so I'm hoping this sends!! ☺ Thank you in advance for all the birthday tweets and messages!!! I feel so happy right now!!! I'm 25!!! Waahhh!!! #birthdaymadness."
So Jessie, do blondes really have more fun?
Remind yourself of Jessie's old look below...
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