The family-friendly show's fourth and final season will feature a character with two lesbian mums when it premieres next year (14), and a spokesperson for the company tells TvGuide.com, "This particular storyline was developed under the consultancy of child development experts and community advisors.
"Like all Disney Channel programming, it was developed to be relevant to kids and families around the world and to reflect themes of diversity and inclusiveness."
Now gay rights advocate Cyrus, who got her start on the channel's hit series Hannah Montana, has praised Tv chiefs for taking a step in the right direction.
In a post on Twitter.com, she wrote, "I commend Disney for making this step into the light of this generation. They control… so much of what kids think! Life isn't bright sets & wardrobe & kids becoming superstars! This is Inspiring".
Meanwhile, The Ides of March star Wood, who is bisexual, posted a link to the news on her social networking account and added, "Hell yea."