Clayton continued: “I would recommend instead of putting ‘mums’, put parents or carers. It would just mean a small change.

“In this world today we shouldn’t just rely on women.”

Metro reports that Kellogg’s has now replied to Clayton, and pledged that its packaging will be updated.

“I wanted to let you know that we’ve recently renewed our research and our new pack design will refer to approval from both mums and dads,” wrote a Kellogg’s representative.

“Apologies for any offence caused and thank you for your feedback, which has played a part in our decision to change.”

Proof, if it were needed, that speaking out against everyday sexism can make a difference. Bravo, Hannah-Marie – and keep it up.

Stylist’s Visible Women campaign is dedicated to raising awareness of women and girls who’ve made a difference, celebrating their success, and empowering future generations to follow their lead. See more from Visible Women here.

How this 10-year-old girl struck a blow in the battle against sexist marketing