Delhi girl Koyal, 21, had managed to reach the top 10 bracket.
She also won subtitles like best designer award and shared the "Beauty With A Purpose" title with Kenya, Guyana, Brazil and Indonesia.
Contestants from 121 countries participated in the international pageant, which also honoured India's Aishwarya Rai, who was crowned Miss World 1994.
At the beginning of the pageant, Koyal had also performed to some of the signature steps of the "Dola re dola" song, which featured Aishwarya and Madhuri Dixit.
It was in 2000 when now Bollywood actress Priyanka Chopra won the Miss world title for India.
