Demi Lovato is using her big vocals to lead the crusade for marriage equality. The pop superstar is the new face of the Human Rights Campaign's re-launch of Americans for Marriage Equality

"I believe that love comes in all shapes, sizes and colors," the "Heart By Heart" singer said in a PSA for the campaign. "Whether you're LGBT or straight, your love is valid, beautiful and an incredible love. So let's protect love and strengthen the institution of marriage by allowing loving, caring and committed same-sex couples to legally marry. Please join me and the majority of American citizens who support marriage equality." Yesss!

HRC has promised more superstars will be lending their support to the campaign soon, too.

Already an anti-bullying ambassador, Lovato has recently been upping her vocal support for the LGBTQ community. In June, the 21-year-old served as the grand marshal for Los Angeles' gay pride parade, performed at NYC Pride and reflected that "a lot of [her] spirit" comes from her grandfather, who came out in the '60s.