After stunning onlookers during her performance over Memorial Day Weekend in Atlantic City at Revel, Beyonce continued to wow at the 2012 BET Awards, flaunting her newly slimmed down post-baby figure in a demure yellow green dress.

Beyonce was a knockout wearing a chartreuse one-shouldered Stephane Rolland Couture gown with a high leg slit, reminiscent of Angelina Jolie's leg moment with the Atelier Versace gown at the 2012 Oscars. The new mom paired the dress with ankle-strap sandals and Lorraine Schwartz jewelry.

The dress showcased her tiny waist with a multi-colored metallic statement belt, hugging her post-baby body curves in all of the right places.

Her husband, Jay-Z, wore a grey suit with a white shirt that matched friend and Watch the Throne partner Kanye West, who donned all white with Air Yeezy sneakers.

Back in May for her performance at Revel, Beyonce was stunning wearing a custom-made Ralph & Russo dress with fringed ornaments and Swarvoski crystals paired with hot-pink Stewart Weitzman Mary Jane shoes. She told the crowed how she dropped the baby weight in just five months.

Y'all have no idea how hard I worked! Beyonce told fans at Revel. I had to lose 60 pounds. They had me on that treadmill. I ate lettuce!

Now tonight I'm gonna get chocolate wasted! she joked.

Beyonce's trainer, Marco Borges, revealed the source of her weight loss that same month, which he attributed to dieting and hard exercise.

We do cardio and plyometric moves like lunges and jumps on and off a bench, Borges told Us Weekly.

Borges said the 5-foot, 9-inch singer has stuck to a diet of vegetables and grilled meats and avoids processed foods.

You don't have to eat only celery sticks. Be sensible and exercise constantly, Borges said.

What do you think of Beyonce's dress from the 2012 BET Awards? View the slideshow to see photos from the awards celebration and let us know in the comments below.