The 42-year-old gave birth to her twin sons Eddy and Nelson just four months ago but plans to get back to work by performing Smile during the annual tribute to the stars that have passed away this year.
According to E! online, the singer is also planning a return back to Las Vegas.
The upcoming performance will be Dion's sixth time singing at the ceremony and it will take place at the Kodak Theatre on February 27.
Her last performance was five years ago when she sung I Knew I Loved You to honour Italian composer Ennio Morricone.