The Girl With No Name

My name is Star, just Star.
I don't have a last name. When I was a baby I was left on the doorstep of a house with only a blanket and a note saying that my name's Star.
I'm 3. I live in a big house with lots of other children in. On my 3rd birthday I got given a diary. I've been told to write an entry everyday so when I'm older I can look back and remember my childhood.
Not that there's anything worth remembering.