KTLA anchors Lynette Romero, Sam Rubin, and others paid tribute.
“She lived a good life and is now at peace,” Winfrey said.
Rapper 50 Cent, Gabrielle Union, and others shared their condolences.
The Marvel Comics creator died on Monday, Nov. 12.
The 20-year-old performer was fatally shot Monday in South Florida.
Opera singer impressed fans on season 3 of the series.