This is a question that only Hilary Duff herself can answer.
wHo iS Hilary Duff dAD??
pop
Hilary duff.
Hilary Duff's birth name is Hilary Erhard Duff.
Hilary Duff's middle name is Erhard. Hilary Erhard Duff
Hilary Duff was born in Houston, Texas.
Hilary Erhard Duff
Hilary Duff's Twitter is @HILARYDUFF
No Hilary Duff is not a boy she is a girl.
Hilary Duff's last name is (unsurprisingly) Duff.
Hilary Duff's father's name is Bob Duff