In 2018, Courtney entered the "Celebrity Big Brother" house, the day after New Years Day, and remained in the house for 32 days and eventually winning the season, beating Ann Widdecombe. Jenek appeared as both Courtney and himself, throughout the season being referred to "him" out of drag and "her" in drag. Following Courtney's win on "Big Brother", her popularity continued to grow in the United Kingdom and tabloid newspaper "The Sun" published a report on 21 November 2018 claiming that Courtney would receive £50,000 for appearing in a programme entitled "The Courtney Act Show"; Channel 4 confirmed the programme two days later, with Courtney saying that she would be "working with some of favourite artists". which was broadcast on Christmas Eve of 2018. The show features performances from Bianca Del Rio, Adore Delano, Darienne Lake and Leona Lewis. Jenek also hosted the dating reality show "The Bi Life", appearing both as Courtney Act and Shane, and which premiered in Ireland and the United Kingdom on 25 October 2018 on E! Courtney competed with the song "Fight for Love" on "Eurovision - Australia Decides" in February 2019 to represent Australia in the Eurovision Song Contest 2019, but was not successful, losing out to Kate Miller-Heidke, with the song "Zero Gravity". The show received positive reviews.