The 'Domino' hitmaker, who is known for making a statement with her flamboyant and garish outfit choices, has been talking to designer McCartney about a collaboration between the pair as fashion plays such a big part in her life, reported Femalefirst.
"I just spoke to her (Stella) and we're hopefully going to work together soon. She's an incredible designer. There's one playsuit, black, white gold belted. I'm definitely growing into fashion," she said.
Jessie, 24, also says she has embraced her new feminine look, which she says was always her aim but initially needed a style to catch the public's attention.
"That really scary, spiky, cartoony kind of thing, that was me two or three years ago. Now, I'm definitely more embracing of myself as a woman and my sexuality and just being a bit more feminine."