The actress and singer gave birth to son Luca on March 20, and since her husband Mike Comrie has retired, she has decided he should look after their new addition when she resumes her film career.
A source said: "Hilary told Mike that since he`s retired she`s now the family breadwinner, he should be the stay-at-home parent.
"She had Mike trained to do diapers and bottle feedings, and she has put him in charge of other household duties, including making breakfast, doing laundry and light cleaning."
Hilary, 24, has wasted no time getting back to work following the birth of Luca, and was spotted leaving the gym less than two weeks after her son was born.
The source added to the National Enquirer magazine: "Mike loves his son and is enjoying the bonding time, but he jokes he feels more like Hilary`s slave than her husband.
"Meanwhile, Hilary goes to Pilates classes five times a week, and she`s out shopping and doing lunches with girlfriends most afternoons. She buzzes around town to meetings and auditions."
Currently Hilary has no movies scheduled, but she recently finished shooting `She Wants Me`.