Click the map to see. This map shows teen birth rates by ZIP code for Dallas County in 2012. The birth rate is the number of births per 1,000 girls age 15-19.
Gigi is a French nickname most commonly used for Virginia or Georgine. However, Gigi can be used as a nickname for any name beginning with Gi or G. Occasionally it is used as a given name in its own right.
My niece and nephew call my grandmother GG-she is their Great-Grandmother, and that's what it stands for. I call my grandmother Grandma, but as I understand it in the modern age, kids have all sorts of pet names for their grandparents. Gigi might be one of them. I have also heard Meema... can't think of any others.