Last week, they celebrated their son Luca's first birthday with a special birthday with family and friends.
And Hilary Duff and her husband Mike Comrie looked very much the proud parents as they enjoyed spending a day out with their little man in Beverly Hills on Tuesday.
The couple couldn't stop smiling as they carried the well-behaved blonde youngster though the city sunshine.
Baby love: Hilary Duff cradles her one-year-old son Luca as she made her way to a baby class in Beverly Hills on Thursday
Hilary looked casual in a vest top and loose fitting blue trousers with her blonde hair pulled into a ponytail. She carried an oversized bag full of baby supplies as she made her way to Baby's First Class in the upmarket city.
Retired hockey player Mike, meanwhile, sported a backwards blue baseball cap, T-shirt and jeans and the couple took turns to carry their growing little man.
Proud parents: Mike Comrie joined his wife for the day out with their bundle of joy
The couple clearly enjoy showing off their little cutie, with the 25-year-old Lizzie McGuire star last week posting a photograph of Twitter, showing the youngster looking thoughtful.
Amused by his cute pose, Hilary decided to show it off to all of her followers, writing underneath: 'I was just thinkin... #nofilter.'
Co-parenting: Hilary and Mike looked in high spirits at the chance to spend some quality time with the tot
Father and son bonding: The curious youngster looked happy in daddy's arms
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few days before, Hilary and husband Mike Comrie had celebrated their
son's first birthday, getting him a robot cake for his party.'Can't believe Luc will be 1 2morrow!Time has flown by!So proud of my little man!very blessed 4 a strong healthy boy& many wonderful memories,' she wrote on Twitter the day before.
Pouting pose: Hilary Duff posted a Twitter snap of her young son Luca looking thoughtful on Wednesday