Celine Dion was back at Caesar's Palace in Las Vegas performing her new show, 'Celine,' to a sold-out crowd. While the performance had the audience cheering and tearing up with emotion, the one thing that everyone was talking about was Dion's svelte figure.

She revealed to Canada's Etalk (via UsMagazine.com) that the secret to her fabulous body is "breast-feeding." "You get busy with twins, and you feed them so they help you to recover very fast. So I helped them help me." Dion had given birth to twins Eddy and Nelson five months ago.

Dion, 42, previously revealed that she had undergone six rounds of in vitro fertilization before getting pregnant with the twins, born via C-section in October last year. The singer also has another son, Rene-Charles, 10, with husband, Rene Angelil.