Don't know for sure as it is rude in Asian culture to ask about girl/woman's age.
In terms of oldest, it would be me, but I only massage women.
My guess for youngest, likely Sunny. I could be wrong but there may be an earlier thread about her taking courses.
See my earlier thread about two new MP girls Joann and Julie. With Julie use body language, as she speaks only few word of english. Haven't tried them yet, but saw big smiles from their customers giving hugs/kiss on forehead to Joann and Julie after session while I was trying to get into/out of Diamond.