An apsara, created by Vishnu personally. She was born out of a flower that lay on his thigh (uru).
Read about Urvashi here
http://hindumythologyforgennext.blogspot.com/2012/09/the-birth-of-uruvashi.html
About a dance competition, that Urvasi won
http://hindumythologyforgennext.blogspot.com/2012/08/vikramaditya-and-apsaras.html
About Pururavas and Urvashi
http://utkarshspeak.blogspot.com/2012/10/urvashi-and-pururavas.html