At the Guardian, John Mullan named a list of ten of the best disguises in literature.One book on the list:
Madame Doubtfire, by Anne FineRead about the other titles on the list.
Unemployed actor Daniel Hilliard dresses up as a woman and applies for the job as nanny to his children, who live with his estranged wife Miranda. The elder two of his three children recognise him immediately, though his wife is completely fooled. When she discovers his ruse, she agrees to give him more access.
--Marshal Zeringue