[1] At the time of her Eurovision win, she was only 13 years old, making her the youngest winner of the contest, even though the lyrics of her song "J'aime la vie" ("I love life") imply that she is 15;[2] the Swiss petitioned to have the song disqualified after her real age was revealed.

Kim also represented Belgium at the Yamaha Music Festival in Tokyo during the autumn of 1986 and sang the title song for the French animated television series Il était une fois... la vie.

Kim's pop rock album Make Up was released on 12 May 2011, containing songs written by famous Belgian artists like Salvatore Adamo, Dani Klein (Vaya Con Dios), Ozark Henry, Anthony Sinatra (Piano Club), Jacques Duval and David Bartholomé (Sharko).

In March 2023, Kim was a guest celebrity judge in the episode A deux c’est mieux of the Belgian French-language reality television series Drag Race Belgique, which was broadcast on Tipik.

[3] Kim was born in Montegnée, near Liège to a hairdresser mother and accordionist father,[4] and started singing when she was seven.