Nicole Kidman has admitted that she is "boring."

The 44-year-old actress says she's not considered fun anymore because she no longer drinks alcohol.

The Oscar winner's husband Keith Urban has had a well-publicised battle with alcohol abuse and the couple have two young children; Sunday Rose, three, and 13-month-old Faith Margaret.

"I don't drink alcohol," Nicole confessed at the Golden Globes last night. "See how boring I am? I'll have sparkling water tonight."

Nicole would also want to keep a clear head for her work as a UN Goodwill Ambassador to help injustices against women around the world.

"I grew up in a family of mostly women and I was raised by a feminist mother, who educated me at an early age about the atrocities committed against women," she explained to InStyle recently.

"[UN Women] focuses on eradicating that violence and it's a perfect fit for me, because I strongly believe that by helping women, we're helping families."