Former Disney star Bella Thorne has come out as bisexual.

The 18-year-old actress confirmed her sexuality to her 6.4 million Twitter followers after she was asked about it on the social media site.

Bella Thorne
Bella Thorne (Jack Plunkett/Invision/AP)

It followed speculation sparked by a photograph which appeared online last month showing Bella kissing another woman.

Bella later thanked her fans after receiving a host of supportive messages on Twitter.

Bella played CeCe Jones on the Disney channel series Shake It Up. She also appeared in TV drama My Own Worst Enemy, opposite Christian Slater, and in the Adam Sandler film Blended.

She split up with British actor Gregg Sulkin, 24, earlier this month, telling People magazine in a joint statement: “After much thought and soul-searching, we have made the difficult decision to end our relationship.”

The former couple said their schedules made “seeing each other difficult”.