Billy Joel once memorably sang that "Only the Good Die Young."
While his point was that you should live your life, not be consumed by preconceived inhibitions, the phrase certainly still rings true in modern day Hollywood.
Be it from substance abuse or other tragic circumstances, some of the world's most beloved stars have met an untimely end long before they should have.
From Philip Seymour Hoffman's heroin overdose and Paul Walker's fatal car crash to some whose deaths remained shrouded in mystery, it's a long list.
Scroll through The Hollywood Gossip's gallery of 21 shocking celebrity deaths below as we look back on some of the brightest stars who we lost too soon.
They may be gone from this world, but they are not forgotten: