Gigi

GiGi is a nickname given to only the best people. This is a beautiful name and is only given to the people with the highest honour. GiGi is a wonderful person, normally good at acting, and has a nack for telling stories. One of the best people in your life, pretty, and sweet, but sometimes plays around with mean words with friends but is always joking. GiGi is amazing

GiGi is often used as a way to describe the best person someone has in their life.

(source : Urban Dictionary)