Miley Cyrus has been named as the guest curator for Madonna's Art for Freedom project.
The 'Adore You' singer will help the star to choose this month's winner selected from the top daily entries.
The aim of the project - which launched in September last year - is to find artists who can creatively express their take on freedom. They will then win a $10,000 grant to a nonprofit organization of their choice.
Cyrus said of her involvement: "Art can speak volumes, I'm glad to join Madonna in encouraging people to have their voices heard.
"It's an ideal home to see how each of us can participate in changing the world for the better."
Madonna added: "There has never been a more crucial time to participate and help create change in the world.
"I've been so inspired by people's submissions since we began and I welcome Miley's input along with her fans to express themselves artistically and to share their creative ideas on the subject of human rights and freedom of speech.
"Miley and I look forward to hearing your voices in the format of your choice throughout the month of April and onward."
The pair previously joined forces to perform a duet at Cyrus's first ever MTV Unplugged session in Los Angeles earlier this year.
Katy Perry acted as a guest curator for Madonna's Art for Freedom project back in January, while David Blaine held the role in December.