Do you mean an escort who caters to little people?

I started by selecting "Height -- shorter than 4'9" ", and got 20 different hits for 2007.  On the first page, I found a link for "Little Miss Tiffany", who claims to be 3' 11" tall.  Her site is linked below, and you can do some additional searching to see if there are other choices more convenient to you.  Happy hunting!