Because it was a song he sang on the Zvezde Granda competition back in the spring of 2007. I guess his người hâm mộ base was just starting to take off around then and the girls liked the song and the word and adopted it for themselves. The reason why the tiêu đề was Russian was because it was an original Russian song called that. But a Serbian singer sang that song in Serbian, but kept the Russian word "Krasiva" for the tiêu đề and within the song's text.
The Russian version was sung bởi Valery Meladze and this is it:
link Then it was sung bởi Zdravko Colic who is one of Milan's yêu thích singers from the Balkans. Here he sings:
link And then here is Milan's appearance during the Zvezde Granda competition which was in Spring of 2007.
Milan Stankovic
link 
