The future star is the daughter of Leah, whom the famous guitarist shares with his second wife Jo Wood, the dailymail reports.
Jo also signed with Storm when she started out in her modelling career as a teenager.
As Maggie has grown up, Sarah is now considering her an 'up and coming star' and the pair are set to meet in the 'coming months'.
A source told The Mirror: 'Sarah saw a photo of Maggie and has been keen to meet her ever since.
'She thinks she has incredible potential, and could be a real up-and-coming star in the modelling world. And, of course, everyone trusts Sarah’s eye.
'She’s hoping to meet Maggie in the coming months, and Maggie is also really keen.'
Jo herself added that she thinks Maggie is 'the most beautiful girl in the world' and that her granddaughter 'really wants' to get into modelling.
“Sarah Doukas – the agency boss who spotted Kate Moss when she was also 14 saw a photo of Maggie and has been keen to meet her ever since. She thinks she has incredible potential, and could be a real up-and-coming star in the modelling world. And, of course, everyone trusts Sarah’s eye.
“She’s hoping to meet Maggie in the coming months, and Maggie is also really keen.” Gran Jo – who also signed to Storm when she started modelling as a teen – says: “I think Maggie is the most beautiful girl in the world. She’s tall and stunning.
Ronnie and his current wife Sally have been married since 2012 and Ronnie has a further four children from his previous relationships.
His children are Jesse, Leah, Tyrone, Gracie Jane and Alice Rose. He also has six grandchildren, including Maggie.
On Saturday Ronnie enjoyed a family day out with his wife Sally and their twin daughters at a performance of The Snowman at Peacock Theatre in London on Saturday.
The youngster’s mum, Leah, is the daughter of the Rolling Stone and his second wife Jo Wood, also a former model.
Essex-born Jo, who has two children with Ronnie — Tyrone, 32, and Leah, 37 — as well as Jamie, 41, from a previous marriage, adds: ‘Really, you’ve got the food companies to blame. More money should be going into educating people about all the junk they’re putting into their bodies.’
However, her sugar theory is not supported by scientific research. According to the UK’s National Cancer Institute there is no proof that sugar can directly cause cancer.
Its website states: ‘A high-sugar diet may contribute to excess weight gain, and obesity is associated with an increased risk of developing several types of cancer.’