1. 1.The first number represents a place in Cambodia where she gave birth to her eldest son, Maddox. 
2. 
   2. The second tattoo represents a place in Ethiopia where she gave birth to her daughter Sahara. 
3. 
   3. The third symbolize a place in Namibia where she gave birth to her second daughter from Brad Pitt Shiloh.
4.  
   4. Another tattoo on her represents a place in Vietnam where Plax, her son was born.
5. 
   5. The 5th and 6th stand for a certain place in France where she gave birth to twins, Vivienne and Knox. 
6. 
   6. The last tattoo stands for Oklahoma – the birth place of Brad Pitt.