The new head of British Vogue replaces Edward Enninful, who spent more than six years breaking boundaries and championing diversity at the leading fashion magazine.
But London-born Nadi, who is the first black woman in the post, told BBC News there was still work to be done. "Obviously what Edward did was amazing, I'm just moving on," she said.
Nadi, 44, began her career in newspapers in the UK before moving to New York and joining the Vogue team. Over the next 14 years, she worked her way up, eventually reaching the position of editor of Vogue.com.
Nadi has interviewed stars including Rihanna and Angelina Jolie, and describes herself as "first and foremost a storyteller". But Enninful's decision to step down last summer created a void at the top of British Vogue and Nadi recently moved back to the UK to take over.
Speaking to BBC News at Vogue's new office in central London, Nadi, whose official title is head of editorial content, admitted she was feeling the pressure.
"Absolutely," she says. "But it's exciting. It's an exciting time."
Enninful, who has been a high-profile advocate for greater inclusion in the fashion industry, changed the tone at British Vogue. Under his leadership, an openly transgender woman (Laverne Cox) appeared on the cover of the publication for the first time, as well as models with disabilities./BGNES