For the series, he partnered with model and singer Fauve Hautot reaching the Final 3 stage. On 19 November 2011, the final day of the competition, he finished third overall behind winner Shy'm who had partnered with Maxime Dereymez and runner-up Philippe Candeloro with his dancing partner Candice Pascal. He also appeared on the Christmas 2012 edition of "Danse avec les stars" finishing sixth overall. It is widely accepted Baptiste Giabiconi was the designer Karl Lagerfeld's "muse" starting 2008 when Giabiconi was just 18. In a revealing book entitled "Karl et moi" (meaning Karl and me) published on 27 March 2020, Giabiconi wrote extensively about their relationship, saying it was more a platonic than a carnal one. He admitted at 18 he was a "blank page" and at the most opportune time was greatly effected as a young man by Lagerfeld. Giacobini says: "Often, we hugged. It was a very powerful filial relationship, with a love we could not describe" adding that he called Lagerfeld "My Karl, my little Karl and sometimes my love". Lagerfeld was also "excessive" in lavishing him with gifts. Describing the affinity as more of a "father and son" relationship, Giabiconi says in the book that Lagerfeld even considered adopting him as his legal son adding: "Karl had no children. He really didn't have a family by his side and surely it was also to fill a certain emptiness, some lack, some loneliness. He just wanted me to be his son one way or another. I wanted to protect myself." Giacobini also appeared nude in photos taken by Lagerfeld, but without getting involved sexually. Lagerfeld in his will also appropriated funds for his Birman cat Choupette which was originally Giabiconi's. When he left to see his mother for a few days and asked Mr. Lagerfeld to cat sit, he left the cat with Lagerfeld and within days, the latter developed great affection for the cat, so Giabiconi ceded it to Lagerfeld as a personal gift from him. Giabiconi also revealed in an interview with the French TF1 talk show "Sept a Huit" broadcast on 23 February 2020 that there were seven heirs named to Karl Lagerfeld's fortunes, and that Giabiconi's name was one of them.