The 22-year-old English model voiced her support for same-sex relationships at the Sydney premiere of Paper Towns, just weeks after declaring her love for girlfriend Annie Clark, aka St. Vincent.
"I think everyone has a right to be whoever they want to be, so I'm just very happy," she shared in an interview with the Daily Mail. "I think it's wonderful that, you know, it's being accepted more and more."
Delevingne and Clark were first linked in February, and the model credited the 32-year-old American singer with her recent happiness in the July issue of Vogue. Delevingne previously dated actress Michelle Rodriguez in early 2014.
Delevingne will portray Margo Spiegelman in Paper Towns, and stunned in an emerald green dress at the premiere. The movie is based on the John Green novel of the same name, and co-stars Nat Wolff as protagonist Quentin Jacobsen.
Paper Towns opens in theaters July 24. Delevingne is also scheduled for Peter Pan film Pan with Hugh Jackman and period drama Tulip Fever with Alicia Vikander, and adaptations of comics Suicide Squad and Valerian and the City of a Thousand Planets.