Borg began her career as a teenager, hosting the Maltese television shows "Teen Trouble" and "Teen Traffic". In 2005 she tried to represent Malta in the Junior Eurovision Song Contest 2005 with the song "Going wild". In 2014, Borg took part in "Malta Eurovision Song Contest 2014" with the song "Lovetricity", placing eighth in the final. She returned to the competition in 2015 with the song "Rush" and 2016 with the song "Kingdom", placing second and fourth, respectively. In 2018, she returned to "Malta Eurovision Song Contest" for the fourth time with the song "Taboo", winning the competition. She represented Malta in the Eurovision Song Contest 2018 in Lisbon, Portugal.