Possessive Pronouns

mine                      ours
yours                     yours
his, hers                theirs

* * * * * * * * * * 
- S'accorde au genre du possesseur et non de la chose possédée. 

Examples:
This is Beety's car. It's her car. It's hers. 
This is Sherlock's car. It's his car. It's his.