Kidman keeps skin smooth with sunscreen

Nicole Kidman's top beauty secret is sunscreen.

The 'Australia' actress - who is married to country singer Keith Urban - is keen to maintain her flawless skin, and believes the best way to halt the ageing process is to slather herself in the protective lotion.

Country musician Miranda Lambert said: "I use sunscreen every day - SPF 85. I tan a lot but not on my face. I heard that from Nicole Kidman. She said she uses sunscreen throughout the year, and she is so beautiful."

Miranda, 25, also revealed her own top tip - lipgloss.

She explained: "I'm a lip-gloss freak. My favourite products are M.A.C. Lipglass in Prrr, Kiehl's Ultra Facial Cleanser and Kiehl's Ultra Facial Moisturizer."

Miranda - who shot to fame after reaching the final of US reality TV show 'Nashville Star' in 2003 - added she only wears trousers when she is performing as any other clothing makes her feel uncomfortable.

She explained to America's OK magazine: "I perform in jeans every night. I jump around too much to wear a dress! My style is a little cosmo and a little country, with some rock 'n' roll."