Disney has introduced its first male princess.

The inclusive move was featured on TV channel Disney XD's own Star vs. The Forces of Evil, which follows the adventures of interdimensional princess Star Butterfly (voiced by Eden Sher) and her human teenage roommate Marco Diaz (Adam McArthur).

A recent episode saw Marco disguise himself as Princess Turdina to help save the students at St. Olga's Reform School for Wayward Princesses from Ms. Heinous, the wicked headmistress.

Just as Marco is about to reveal his true identity, Ms. Heinous arrives to out him herself, pulling down his shirt to reveal a strand of chest hair. "That doesn't prove anything. Princesses can be hairy," one princess shouts.

"Yeah, we believe in you, Turdina," a fellow princess shouts in support. Another points out, "Why does it matter if he’s a boy? Nothing he said was wrong", while another adds, "He can be a princess if he wants to!", and another, "Turdina is a state of mind."

This isn't the first time Star vs. The Forces of Evil has broken new ground, also being the first Disney cartoon to feature same-sex kisses, on an episode that aired in February.

The show was created by executive producer Daron Nefcy, the second woman to spearhead her own Disney animated show.