The couple - who married in January 2010 and are expecting their first child together - have a shared passion for books, with the model-turned-TV chef admitting she loves have the same hobbies as her musician spouse.
Sophie said: "I only discovered the author Margaret Atwood in the past five years. Jamie is a big fan of hers as well. It's nice being married to someone who likes to read because you can indulge in geeky conversations about books."
Sophie, 33, also revealed she has started to read more non-fiction books to make up for the fact she didn't have a university education and says she has developed a fascination with feminism.
She told Britain's Elle magazine: "I've started to read more factual books, partly because I didn't go to university.
"Feminism is so pertinent - it affects all of us. As a woman you have an instinct to question sexual politics, we have a responsibility to care."