The singer welcomed twin sons Eddy and Nelson in October 2010 following several rounds of IVF treatments.
"You get busy with twins and you feed them so they help you to recover very fast. So I helped them help me," she explained to Canada's CTV.
She went on to confess that while she feels "lucky" to have shed the baby weight so easily, she was not concerned with returning to her slim figure.
"It's not important. I'm not a model. I'm not there to wear a size 2 or 0 or 4. I'm going to find the dress that's going to fit the body at the time," she said.
"But it happened to be that the weight loss [happened] very rapidly. And genetically, I'm very lucky too."
It was recently reported that Dion employs helpers to raise the babies while she returns to Las Vegas for a three-year concert engagement with Caesar's Palace.