Blissful Hilary Duff reveals her taut stomach and svelte gym-honed shape in a patterned string bikini during beach day in Hawaii

She recently said that she felt 'fit and strong and happy' after personal battles with her weight.

So Hilary Duff, 27, got the chance to celebrate it on Wednesday, as she blissfully played on the beach in a string bikini, accompanied by her three-year-old son Luca.

Smiling beneath a sun hat, the mum-of-one revealed - not only the products of her intense regime - but also her improved well-being of the latest fitness effort.

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Confident: Hilary Duff confidently revealed her newly-svelte shape after month of hard work in the gym on Wednesday afternoon

Confident: Hilary Duff confidently revealed her newly-svelte shape after month of hard work in the gym on Wednesday afternoon

The former child star showcased the athletic nature of her petite physique as she displayed a toned set of abs for the first time since her pregnancy.

She was glamorously dressed for the beach day and kept herself protected from the sun in style with mirrored shades and a large sun hat. 

Toned as she ran up the beach, the beauty certainly had that holiday feeling and let out a giggle as she turned towards a girlfriend and her young son.

Holiday feeling: She looked blissfully happy as she played on the beach with her son Luca

Holiday feeling: She looked blissfully happy as she played on the beach with her son Luca

Cheeky: Turning towards the sea, Hilary revealed her toned shape while paddling

Cheeky: Turning towards the sea, Hilary revealed her toned shape while paddling

The results of Hilary's stepped up gym regime were first revealed in late 2014, as she simultaneously admitted to Shape magazine that she finally felt 'fit and strong and happy'.

In the interview, she said addressed her own personal weight battle saying that in her Disney years as Lizzie McGuire she had been 98lbs and 'far too skinny'.

Like most, she still hovers around five to ten pounds of weight fluctuation, she admits, but she said was proud that her body had been so strong throughout pregnancy. 

Later, the star told Elle.com: 'I just tell myself, "I'm 5'2", I'm really fit, killing it in the gym, and doing crazy things." I love to work out, but I'm just not that concerned with being the skinniest person.'

Beautiful: She proved that her well being was a huge priority as she laughed and played

Beautiful: She proved that her well being was a huge priority as she laughed and played

Cut a stylish beach side figure in a triangle bikini like Hilary's

Black and red aztec print triangle bikini

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She's holidaying in Hawaii and Hilary Duff seemed keen to show off her toned figure as she hit the beach in a curve enhancing red and black Aztec print string bikini.

With abs we'd all kill for, Hilary looked amazing in this printed triangle bikini set, featuring an allover Aztec print in a black, white and red color way and cute tassel tie sides to the hipster bottoms. Teaming her bikini with a chic straw hat and aviator sunglasses, Hilary looked every inch the glamorous star in this beach side get up.

If you've got a late summer holiday planned or are hunting for that elusive perfect bikini ahead of some Winter sun later in the year then you might be keen to pick up a printed bikini like Hilary's and flatter your figure in a similar beach outfit.

We've rounded up a few of our favorite printed triangle bikinis below, including a paisley print from Eberjey and soft leopard print at Revolve Clothing.

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Athletic: She recently admitted that she's found a happy weight, which is much more advisable than when she was 'too skinny' as a teen

Athletic: She recently admitted that she's found a happy weight, which is much more advisable than when she was 'too skinny' as a teen

'I'm not a model; I'm an actress. I always feel like I'm in the five to ten pound struggle, but my life is so busy. I'm just not that concerned, really. I'm normal and I'm perfectly happy being that way.

'Some weeks I'm like, "Man, my clothes are fitting so good" and then some weeks I'm like, "I need to cut back on a few things," but that's it. I don't fall into the trap of having to be 110 pounds.' 

2014 was also the year that Hilary filed from divorce from Luca's father Mike Comrie and she very publicly signed up to dating app Tinder.

Mike and Hilary are now working on amicable co-parenting relationship for the sake of Luca, as their legal battle for custody continues.

Healthy and happy: In 2014, Hilary hit the gym hard to try to gain back her post-baby body

Healthy and happy: In 2014, Hilary hit the gym hard to try to gain back her post-baby body

Toned: She reflected on how strong she had been during pregnancy with Luca

Toned: She reflected on how strong she had been during pregnancy with Luca

Energetic: The mum-of-one seemed to have a refreshed energy for playing with her child

Energetic: The mum-of-one seemed to have a refreshed energy for playing with her child

 

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