Hilary Duff Weight Loss: Smoking Mom Flaunts Abs In Bikini [Photo]

Hilary Duff and three-year-old son, Luca, were spotted enjoying the sand, beach and the sun in Hawaii recently. As the mother and son duo prance around the sand, photographers and onlookers could not get enough of the "Lizzie Maguire" star. Sporting a sexy string two-piece bikini, Duff showed off an amazingly toned bod - with killer abs to boot! Her arms and legs look incredibly sexy as well, not to mention her beautifully acquired tan. Needless to say, Duff is definitely one gorgeous mom.

Apart from Duff and Luca, E Online reveals that other close friends of the twosome are with them during the Hawaii vacation. In some of the pictures published by the site, Duff could be seen walking along the shore and looking happily content with her life at the moment. Another snap showed Duff playing with her adorable little boy, with the two taking a dip in the water. Although the singer and actress has a wide rimmed floppy hat on, the smile across her face as she looks at her son could not be hidden. Check out her pics here.

Earlier this year, Duff talked about her struggles to stick to a diet plan and attempts to regain the size of her body during her "Lizzie Maguire" days. While she admitted to her initial endeavors to try and get back her old body type, the "So Yesterday" singer shared that she eventually accepted the fact that her physique has changed and she has no other recourse but to accept it.

"I'm the worst dieter ever so I don't have the best body, but I'm proud of my body and I'm, like, accepting of what it is," admitted Duff in an interview with E News. She added, "I'm not ever going to be 110 pounds again, so working with what you got and just trying to feel strong and powerful I think is a good motto for a mom who's 27."

Apart from talking about her body issues, Duff also went on to rave about her toddler son, Luca. The "What Dreams Are Made Of" singer gushed, "He is my everything in life and my little blessing." She added, "My friend sent me a text the other day and he was like, 'It's just really unfair how cute your kid is.' I'm like, 'That's so nice.' Obviously I feel the same way but he's so much better inside than outside and I'm so grateful for that."