Sometimes it's so hard to grasp that life can be easily taken away, at any given moment; that one day someone can be there, the next day, hour, or even minute, they're gone.
Take a look at these images of celebrities that sadly passed away within days of these pictures being taken. Some are posed for, some spending time with family and friends, or simply leaving a restaurant. It really does prove that life is precious, and fleeting.
1. Chris Farley
The comedian suffered an overdose of December 18, 1997. Tragically, this picture was taken by the last person to see him alive. She thought he had crashed out and left him alone in his hotel room, no-one would ever see him alive again.
2. Robin Williams
Taken the day before his death, Robin went to an art gallery with his wife Susan. He sadly committed suicide by asphyxiation at his home. He was a beloved comedian, who was well known for his incredible comedic flair.
Check out this clip from Mrs. Doubtfire!
3. James Dean
The picture shows the Porsche 550 Spyder that caused his death just hours after this picture was taken, at just 24 years old.
4. John Candy
Taken while filming his last movie Wagons East, John died of a heart attack in his sleep while filming on March 4, 1994. Who didn't love Uncle Buck as a kid?!
5. Marilyn Monroe
This is known to be one of around 8 pictures taken on a vacation the star had just before she died of an apparent overdose on barbiturates. Marilyn is now one of the world's most iconic women.
6. Heath Ledger
The last known photograph of Heath shows him smiling while filming Doctor Panassus. He was later found dead of a prescription drug overdose on January 22, 2008.
7. Ryan Dunn
This picture shows Jackass stuntman Dunn drinking with his friends just hours before his death. After this drinking session he decided to drive, a decision that sadly cost him his life, as he crashed at around 130mph, killing both him and his friend who was also in the car with him.
8. Philip Seymour Hoffman
Drinking alone in an Atlanta bar, the hugely talented actor died just a few days later from a fatal heroin overdose.
9. Rik Mayall
Snot Face! The English star of Drop Dead Fred was pictured walking his dog, the day before he collapsed and died at his family home.
Go back to childhood and check out the trailer for Drop Dead Fred!
10. Michael Jackson
The pop legend was due for a huge comeback after years away from the limelight. Sadly, it wasn't meant to be, as just a few days after this photo was taken at rehearsals for his comeback tour, the King of Pop died of a fatal prescription drug overdose.
11. James Gandolfini
The Sopranos actor was papped coming out of a restaurant in the Italian city of Rome. He died of a massive heart attack just 24 hours later.
12. Paul Walker
These photos show Fast and Furious star Paul Walker getting into the car that crashed and killed him moments later on November 30, 2013.
The Porsche Carrera GT was being driven by his friend Roger Rodas, who also died in the incident, when he lost control of the vehicle and crashed.
They will all be so tragically missed. RIP