In 1991, Osbourne appeared as a child in some videos and documentaries relating to her father's musical career, and appeared on The Howard Stern Show in 1998, but did not reach mainstream acting success until being cast in MTV's 2003 adaptation of Wuthering Heights. She later provided voiceover work in the 2014 animated film Postman Pat: The Movie.
Around 2010, she began recording and releasing music under the project name ARO (her initials). ARO, in contrast to her father's heavy metal, has been described as synth pop, and is influenced by Kate Bush and Portishead, as well as PJ Harvey and Massive Attack. She has appeared in her own music videos, and her video for Raining Gold received 2 million hits in just two months.