The starlet posted a throwback picture of herself pre-stardom and we have to say, she was seriously cute!
Taking to Instagram yesterday (9 September), Jessie shared this pic with her fans, adding the caption: "Just a little girl with a dream... Everyday I feel blessed that I'm living it!"
Altogether now; awww!
Before Jessie discovered hair dye she had a gorgeous chestnut brown hue, styled into a side parting with a long sweeping fringe.
And while she does look pretty different, we instantly recognised her super-sweet dimples and mega-watt smile.
She's a natural beauty!
Did you recognise Jessie in her throwback picture? Let us know by commenting below as the best comment across the site each week wins £50!
Watch Jessie J's video for 'It's My Party' below: