Originally, Kerli wore the marks vertically in between her eyes and the center mark was larger then the other two.
This just kind of reminds me not to look with my eyes but to just feel people ... and not judge. Not judge the book by its cover and not judge anybody by the way they look but only judge people by the way they feel—Kerli
Frequently, the stating of "I.L.U." or simply "ILU" is used to represent what moon marks represent, as "I.L.U." is an abbreviation of "Integrity Love Unity". It also coincidentally means "beauty" in Estonian.