Caroline Af Ugglas has taken part so far in three Melodifestivalen events:
Melodifestivalen 2007 with the song "Tror på dig", written by herself along with Heinz Liljedahl and Mattias Torell. On 24 February 2007 she performed "Tro på dig", ending up in 6th place, which did not qualify her any further in the contest.
Melodifestivalen 2009 with the track "Snälla Snälla" (Please Please). It proceeded to the final where it came second, only 11 points from winning.