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OTRC: Nicole Kidman admits she used Botox

Nicole Kidman speaks to OnTheRedCarpet.com about the film 'Rabbit Hole' in December 2010.

Nicole Kidman says that she used to undergo Botox injections but later stopped the cosmetic anti-wrinkle treatment, following years of speculation.

The 43-year-old actress' forehead has in recent years appeared smoother. She made her comments to the German magazine TV Movie.

When asked what she thinks about the "big problem" of aging in Hollywood, Kidman said that she has "tried a lot of things," including sports and eating healthy food.

"I have also used Botox," the magazine quoted her as saying. "But I did not like how my face looked like afterwards. Now I don't use it anymore - I can move my forehead again!"

Kidman recently filmed the movie "Rabbit Hole," which saw her playing a mother grieving over the death of her young son.

The actress told OnTheRedCarpet.com in December she felt vulnerable playing the part because she had given birth to her daughter just a year before.

Kidman and her second husband, country star Keith Urban, welcomed their first child, daughter Sunday Rose, in 2008. Kidman also has two adopted children from her marriage to actor Tom Cruise - Isabella and Connor.

Kidman, who won an Oscar for her part in the 2003 film "The Hours", was recently nominated for a Golden Globe for her role in "Rabbit Hole." (Check out the full list of 2011 Golden Globe Award nominations).

Kidman is also set to be honored on Feb. 5, 2011 at the Santa Barbara International Film Festival with the Cinema Vanguard Award, which is given to actors who have taken "artistic risks" and have made a "significant and unique contribution to film".

Meanwhile, Kidman is set to return to Broadway in the fall of 2011. She will play Alexandra Del Lago, a faded and often drunk movie actress, in a revival of the Tennessee Williams play "Sweet Bird of Youth".

The actress made her Broadway debut in 1998, when she starred for one season in the David Hare play "The Blue Room", which featured a much-hyped moment in which she flashes her butt briefly.

The original 1959 production of "Sweet Bird of Youth" starred Geraldine Page as Alexandra and Paul Newman as the gigolo Chance.

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