09/18/2008 at 10:15 AM EDT
: newly minted country star – and women's rights supporter.
The singer, 28, plans to perform songs from her new album Do You Know
(which just hit No. 1 on the country chart) at the Nina's Night Out concert in Las Vegas Thursday night. The show, which raises money for the Rape Crisis Center in Las Vegas, will be held at The Palms' Pearl Theater.
"I think this will be a more passionate performance than most," Simpson told the Las Vegas Review-Journal
. "It's important to make a stand for women's rights. If I can get up there and be any inspiration to women, I am blessed to have that opportunity."
also reports that the cause is close to the singer's heart because she has known women who were raped.
"The great thing about Nina's Night Out is it's a message of prevention," says Simpson. "I think it's important as a woman to lend a hand to other women and just try to encourage people that everything's going to be okay."