Lidija Bačić (born 4 August 1985), also known as Lille, is a Croatian pop singer.

[2] Bačić has collaborated with several musical artists, including Mladen Grdović, Alen Vitasović, Grupa Vigor, Dražen Zečić and Tomislav Bralić.

[4] Bačić began performing at local festivals and competitions from the age of ten.

She won her first prize at Dječji Festival in 1997 for her cover version of Mišo Limić's song "Zaljubljeni dječak".

[1] In January 2019, Bačić was announced as one of the 16 participants in Dora 2019, the national contest in Croatia to select the country's Eurovision Song Contest entry, where she, and the song "Tek je počelo", finished in 11th place.