Adelaide first appeared on the Australian soap Neighbours as Lolly Allen, appearing for only three months before her time on the show ended. Some time later, she landed the role of Half-Human Hybrid Tenaya 7 on the children's show Power Rangers RPM (2009), which was filmed in Auckland, New Zealand. After wrapping up on the show, she then moved to Los Angeles and landed a few roles in independent films and web series, even appearing as a supporting character in The Purge (2013). Her big break would not come until she landed the role of Cora Hale on MTV's Teen Wolf, appearing in the show's third season in 2013. However, her stay on that show was cut short when it was announced that she would star as Mary Stuart, Queen of Scots, in the CW period drama Reign.
Notable On-Screen Roles:
- Neighbours—Lolly Allen (2007).
- Power Rangers RPM—Tenaya 7 (2009).
- The Purge—Zoey Sandin (2013).
- Teen Wolf—Cora Hale (2013).
- Reign—Mary Stuart, Queen of Scots (2013-2017).
- Once Upon a Time —Drizella/Ivy (2017-2018).