Donovan played Killer Queen in We Will Rock You. 2017–2018: I'm a Celebrity, TV advertisements and "Lonely" In January 2017, Donovan was revealed as a celebrity contestant on the third season of the Australian version of I'm a Celebrity...Get Me Out of Here!. On 13 March 2017, Donovan won the series and was announced as the first ever Queen of the Jungle. In April 2017, Donovan became the face of the Coles Supermarket "Down down" campaign. On 23 April 2017, Donovan performed an acoustic version of David Bowie's "Heroes" at the 2017 Logie Awards in which she received a standing ovation. In May 2017 the Coles, "Down Down" campaign was refreshed with Casey performing a disco version of the advertisement. Donovan released her first single in 7 years, "Lonely" on 19 May 2017 and Off the Grid & Somewhere in Between EP in August 2017. She performed on New Year's Eve 2017 in Sydney, singing "Lady Marmalade", "Crazy Little Thing Called Love" and "Nutbush City Limits". 2019–present: Chicago, Australia Decides, and The Space podcast In 2019 Donovan starred as "Mama Morton" in the Australian revival of the musical, Chicago, receiving positive reviews. In November 2019, Donovan was announced as a participant in Eurovision - Australia Decides; in an attempt to represent Australia in the Eurovision Song Contest 2020. She performed the track "Proud" in the national final on 8 February 2020 and placed second. In 2020, Donovan became a host on The Space podcast. It is listed in the "Health & Fitness" category through Nova Podcasts on iTunes. Two new short 3- to 4-minute mini-episodes are posted each day by Donovan. It is described as a "mindfulness podcast" and a "mini escape each morning and evening with short (and cringe-free) meditations, motivations, and tips on how to improve your day" 'The Space' is constantly in the Top 3 mindfulness and wellbeing Australian podcast category. Casey has fast become a must-see and hear performer at the annual New Year's Eve gala on the foreshore of the Sydney Opera House with performances in 2017 (Lady Marmalade, Nutbush City Limits, Think, Don't Stop Me Now) 2019 (Rolling In the Deep, I Will Survive, If I Could Turn Back Time, Purple Rain), 2020 (September, 9 To 5, So Caught Up,) and 2021 (Ain't No Mountain High Enough, Higher Love, Finally, Born This Way) and Australia Day performances at the iconic location in 2021 (Two