Sienna Miller's best beauty tip is to use bronzer under the jaw-line.

The stunning actress says it's important to add colour below the chin as it adds "depth" to the face and helps it to blend in with the rest of the body.

She said: "Always bronze underneath your jaw-line - it contours the face and adds depth. The bridge of the nose, cheekbones and temples are also essential."

Sienna - who is famed for her laid-back style - also says it's important to wear a fragrance everyday as it helps to change your mood.

She told vogue.com: "Fragrances have a nostalgic element to them and are an important part of who you are and how you present yourself. They are a sensory weapon and have the power to change your mood. I like the citrus notes of the BOSS Orange fragrances - they are young, fresh and uplifting."

Sienna is often voted one of the world's most beautiful women but says there's only a couple of rituals she swears by.

She said: "I have facials by Linda Meredith and I get my hair coloured with Marie at Sally Hershberger when I am in New York or Leister at John Frieda if I am in London."