Lily Collins will often be inspired to create an outfit around a lipstick.
The 24-year-old actress stars in upcoming adventure drama The Mortal Instruments: City of Bones.
Lily started out as a model and says this period of time has affected her style today.
"I learned all about lighting and what to do with my face. And I've always loved fashion," Lily explained to the latest edition of UK magazine Glamour.
"Recently I've been wearing a pair of ripped denim overalls with cropped tops and ballet flats, but if I'm doing press I'll wear leather pants, a tailored shirt, heels and a hat. A lipstick can inspire a whole look."
Lily was born in the UK but moved to Los Angeles with her mother aged five. Her father is the British rock legend Phil Collins, and Lily spends time in both countries as a result. She shared her views on what differences there are in fashion across the water.
"I love the casual, comfortable chic of LA. But at the same time I get to dress up a lot when I'm in London," she added. "There's this funky, fresh, young vibe there and people can be very chic in either a very put-together way or a grunge way. People are who they are and I like that."
The brunette says her style rules are simple. She advised to avoid clashing colours and patterns unless you feel confident wearing it.
"Don't ever look like you're trying too hard," she advised. "Don't ever wear anything you don't feel comfortable in, because then it'll wear you. Don't wear too many patterns or prints at once, and well I'm still dubious about the whole double denim thing."
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