She was up early for an appearance on NBC's Today show where she promoted her new album, Loved Me Back To Life, an ironic title given the circumstances.
In the evening, the smiling superstar singer was back at NBC for Late Night With Jimmy Fallon, where she happily signed autographs for fans as she went into the studio.
Yes, she's alive: Celine Dion promoted her new
album, Loved Me Back To Life, on NBC's Today Show on Monday, ending
Facebook rumours that she had been killed in a car accident or plane
crash
Double doubt: One phoney Facebook bulletin was attributed to CNN, the other to Fox news
It's the second time Celine, 45, has been hit by a death hoax.
In the latest case, first reported by Contactmusic.com, two phoney Facebook bulletins reported the Canadian's untimely demise - one in a plane crash and the other in a car accident.
Both were attributed to reputable news sources.
Her heart will go on: The 45-year-old singer
later stopped to sign autographs for fans outside the studios of Late
Night With Jimmy Fallon
Writing the wrong: Celine was previously the subject of phoney social media reports about her death in 2012
The faux CNN post was headlined 'R.I.P. Celine Dion 1968 – 2013' and went on: 'At about 11 a.m. ET on Sunday, Celine Dion died in a plane crash.' The report claimed the accident took place at Denver-Peak Regional Airport.
The fake Fox report claimed she had been killed in a car accident, adding: 'Investigators have told reporters that Celine Dion lost control while driving a friend's vehicle on Interstate 80 and rolled the vehicle several times killing her instantly.
'The vehicle was believed to have been traveling at approximately 95mph in a 55mph zone at the time of the accident.'
Face off: The hoax Facebook apps were designed to harvest information from users, according to About.com
Facebook users were told to click on a button for more information.
But according to debunking website About.com, they are rogue apps that get access to members' profile information and friends lists, and reproduce the hoax on the pages of everyone on that list.
The Power of Love singer was the subject of a death hoax in March 2012, when 'RIP Celine Dion' became a worldwide trending topic on Twitter.
Other celebrities who have been victims of fake death hoaxes are Justin Bieber, Eddie Murphy, Kanye West, Britney Spears and Morgan Freeman.