Eonline reports that the 53-year-old, who recently featured on the cover page of Net-a-Porter's online magazine, The Edit, said: "After a certain age, you can't wear anything with words on it.”
"Also, I don't wear a lot of colour because, having red hair, I carry a lot of colour with me."
Moore also has one designer in particular that she finds herself turning to again and again - Tom Ford, who refers to her as a muse and cast her in the leading role in his 2009 film “A Single Man”.
Praising him, Moore said: "I don't know that I'm his muse, I'm definitely a friend. He's not mysterious about fashion, which I love... He's just a great, wonderfully creative and soulful person, and a really good friend."
As for her off-duty hours, Moore likes to reach for an Isabel Marant jacket and boots and finish off her laid back look with J Brand jeans.