Musician Joel Madden and wife Nicole Richie (R) pose at the opening of the Dolce & Gabbana flagship boutique in Los Angeles December 15, 2008, [Agencies]

Nicole Richie is unsure whether she will marry Joel Madden.

The 27-year-old star - who has 14-month old daughter Harlow with Joel, and is currently expecting her second child with him - is content with her relationship and refuses to plan too far ahead.

She said: "I don't know about the future. I make it a custom not to plan the future. I may plan to and I may not."

Asked to name the Good Charlotte rocker's three best qualities, she replied: "Good father! Talented musician! Good personality!"

Nicole is equally as glowing about her daughter, saying she is the most important person in her life.

She explained: "Harlow means everything to me. She had a close resemblance to Joel at the time of birth, but she now looks like me because of her green eyes and blonde hair, but she also resembles Joel."

Although she loves being a mother, Nicole believes it is important to spend some time away from Harlow.

She revealed to Vivi magazine: "I wear jeans and a T-shirt and no make-up when I am with my daughter. But I take care of my adult time too. I like to go to restaurants and bars in high-heeled shoes and dresses when I have free time. Because I am still 27 years old, you know?"