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The 'Domino' singer wears her grandmother's rain coat and hat for the part of Blousey Brown in her school's production. That's a world of difference from the designer Julien MacDonald dress she wore to this past Sunday's Grammy Awards!
A source close to Jessie during her younger days tell The Sun: "Jessie had the makings of a good voice back then and it was clear from an early age that she was a born show-off."
See the diva's early beginnings in the video below. Her voice hadn't exactly matured to the powerhouse point of 'Price Tag' ... but she's not half bad!
Watch Jessie J's 'Who You Are' Video