The 28-year-old pop star took to Instagram on Friday (Sept. 18) to recognize the legal and feminist icon's decades-long commitment to equal rights while serving on the Supreme Court.
"RBG, you are a super hero," Lovato wrote alongside a black-and-white photo of Ginsburg. "For those that don’t know, she spent every day fighting for equal rights, women’s rights, LGTBQ+ rights, affordable healthcare AND MORE... Thank you for fighting for all of us. Thank you for being so brave. Your work will never go unappreciated."