Hilary Duff jeans heels luca playdate

Is it just us, or is Hilary Duff looking better than ever lately?!

Yesterday afternoon the 25-year-old actress/singer and her adorable son Luca went to mommy and me class in the valley, and she flashed us a beautiful smile on the way back to her car.

So what's she been doing to get her figure back since giving birth in March of 2012? We already knew she enlisted celeb trainer Gabe Johns to help her burn away the baby weight, and the other day Hilary tweeted the pic below and wrote, "Workin on my fitness with my girl Viv! @piloxing <3 her big time."

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"I'm finally at a comfortable place with my body," Hil told Life & Style back in May. "It took me a full year! I never had to lose so much before, and it took a while to get mentally motivated. I was enjoying being home with my baby, and I wasn't super strict with my diet."

Her hard work has certainly paid off -- her figure looks fantastic!