Hilary Duff looked fit as she and her family enjoyed a lake vacation in Canada.

The actress, 37, showcased her post-baby body in a hot pink one-piece swimsuit with white piping as she had muscular arms and legs.

The Younger actress let her long, blonde locks flow freely and seemed to have on minimal makeup for a natural look. She then put on a pair of black cat-eyed sunglasses, showcasing the subtle tattoos on her arms.

The Los Angeles resident – who practices ‘mindful eating’ – accessorized with a couple of gold chain necklaces and small hoop earrings. 

The star was joined on the holiday by her her three daughters, Banks, six, Mae, four and Townes, one. The How I Met Your Father star also shared a look at son Luca, 13, whom she shares with ex-husband Mike Comrie. 

Hilary Duff looked fit as she and her family enjoyed a lake vacation in Canada

‘All the cozy summer mems at Lake of Bays,’ wrote the former child star in her Instagram caption.

Lake of Bays is a township municipality within the District Municipality of Muskoka, Ontario, Canada. 

The township, which is north of Toronto, is named after the Lake of Bays. 

In the 2021 census, the township had a population of 3,759 and encompassed 667.43 square kilometers of land. 

Duff has lost weight after her fourth baby.

She relies on strength training, incorporating cardio, and practicing mindful eating with a coach.

She has worked with personal trainers and nutritionists to create non-restrictive diets that include foods like bread, chocolate, and wine.

Duff has been open about her past struggles with body image and eating disorders, emphasizing that she now aims for a healthy, strong body rather than being ‘tiny.’

The actress, 37, showcased her post-baby body in a hot pink one-piece swimsuit with white piping as she had muscular arms and legs

The Younger star had her long, blonde hair down and appeared to be wearing natural looking makeup then slipped on black cat-eyed sunglasses as she flashed her small tattoos on her arms

The Los Angeles resident accessorized with a couple of gold chain necklaces and small hoop earrings

‘I really like to be active. I have a lot of energy that I need to burn off or else I’m like, Blah! So I feel better when I’m active,’ she told Marie Claire in 2023.

‘(I’m) appreciating my health, doing activities that make me feel strong instead of just bettering the outside of my body, spending time with people that make me feel good and share similar views on health and body positivity and getting enough sleep and balance in my diet,’ she told Women’s Health Australia in 2022.

Duff does not have any film or TV projects in the works at this time, but that doesn’t mean she’s not been idle.

Koma hinted in his Mother’s Day tribute to his wife that she may return to singing.  Duff hasn’t put out an album since 2015’s Breathe In. Breathe Out.

However, Koma shared a black and white snap of the artist in a recording with headphone on, looking down at her phone while surrounded by guitars and microphones. 

The star was joined on the holiday by her her three daughters, Banks, six, Mae, four and Townes, one

The star was joined on the holiday by a male friend

‘Happy Mother’s Day ba,’ Koma wrote. ‘Now please go save millennial pop music, it needs you now more than ever.’ 

Last year Duff said she has a ‘big connection’ to her mom friends.

The star is close to the likes of Ashley Tisdale, Meghan Trainor and Mandy Moore, and Hilary has admitted that she appreciates being able to lean on them for support ‘all the time’.

Hilary told PEOPLE: ‘I feel like our big connection to one another, even though we’re pop stars or on TV, is we love our kids.

In this image she had on a black swimsuit with a beige wrap and a hat

And Duff was in a pale blue swimsuit with cut-off shorts as she held a frog

There was also a portrait with her kids and friends on a wood dock

Duff with a child that wore a colorful life vest while on a boat

‘They were little baby worms when we all first got together and started music class at my house. Now, we’re in art class together, and we’re in gymnastics class together, and we’re just, like, moms.’

Hilary loves having the support of her showbiz pals.

The movie star shared: ‘Everybody’s super hardworking.

‘Sometimes we’re all showing up with hair and make-up rushing from a job, and sometimes we look like literal trash, so it’s just nice to be in the trenches with them.’

What’s more, Hilary believes her kids are benefiting from growing up alongside the children of her celebrity friends.

The actress explained: ‘I actually really wonder if, when the kids are older, they’re all still going to be friends, and if it’s going to be helpful having friends [whose] parents are somewhat in the public eye.

‘With Luca sometimes that was weird, or could be still weird. I think he’s navigating it pretty well, but it’s just a strange thing. I wonder if Mae-Mae growing up with kids that have other parents like that is doing to be comforting in a way … Time will tell.’