February 29, 2012 09:30 PM

Dimitrios Kambouris/Getty

Reese Witherspoon wants to change the world — one $5 necklace at a time.

Avon’s Global Ambassador introduced the brand’s latest piece in its Empowerment Collection, the Circle of Support necklace, at the 2nd World Conference of Women’s Shelters in Washington, D.C., Tuesday. All the proceeds from the $5 bauble go toward the Avon Foundation’s programs dedicated to ending violence against women.

Witherspoon let the silvertone necklace — and its circle of interlocking infinity symbols — shine by wearing it with a black cocktail dress featuring a deep V.

“People don’t know that [domestic violence] is so prevalent,” Witherspoon told PEOPLE at the conference. “It’s one in three women worldwide, and one in three women in the United States. You hear those statistics, you start to realize that it’s either me, or it’s somebody who is very close to me. It’s a serious issue and one that’s close to my heart.”

Shop the necklace — and support the fight to end violence against women — at Avon.com.

–Helin Jung


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