Miley Cyrus and Scarlett Johansson named Variety's Power of Women honorees

Miley Cyrus, Scarlett Johansson, and director Ava Duvernay will be among the honorees at the upcoming Variety Power of Women celebration in Los Angeles.

Oscar winner Dame Helen Mirren and Orange is the New Black star Laverne Cox will also be applauded for their philanthropy at the event.

The causes supported by the celebrities include pop superstar Miley's Happy Hippie Foundation, which she founded in 2014 to help vulnerable youths, including the homeless and those in the lesbian, gay, bisexual and transgender (LGBT) community, and the National Coalition of Anti-Violence Programs, which Cox has helped raise awareness for since finding fame on the hit prison drama.

Marchesa fashion designer and co-founder Georgina Chapman, the wife of movie mogul Harvey Weinstein, will also be a guest of honor. She will be presented with the Moroccanoil Inspiration to Action award.

The Power of Women ceremony, presented by officials at Lifetime Television, will be held at the Beverly Wilshire Four Seasons hotel on 14 October (16).

A statement released by Claudia Eller, Variety co-editor-in-chief, reads: "For the past 8 years, Variety has had the honor and pleasure of identifying leading women in entertainment who are dedicated to improving the community through the worthy causes they support. We are so pleased that once again our amazing partner Lifetime will join us to celebrate the achievements of our outstanding honorees."

Salma Hayek, Gwyneth Paltrow, Oprah Winfrey, and Anna Kendrick were celebrated at last year's (15) Los Angeles event, while Lupita Nyong'o and Julianne Moore were feted at a bash in New York, which took place in April (16).