Can you believe Celine Dion has a body like this after three kids ... and the twins were born just four months ago? Wow!

The 42-year-old singer, who posed alongside hubby Rene Angelil, looked elegant in a shimmery, metallic Giorgio Armani Prive gown.

Celine will be hitting the stage to sing "Smile" during the In Memoriam segment of the Oscars ... certainly a moving part of the ceremony.

Aside from tonight's performance, Ms. Dion has a busy schedule ahead of her. Find out where she'll be performing for the next three years ... after the jump.