Mary Tyler MooreMary Tyler Moore's smile will live on in the hearts of her family, fans, and fellow actors.

The TV legend passed away today at the age of 80, and tributes began pouring in immediately on social media as actors and celebrities remembered the trailblazing Moore. Her "Mary Tyler Moore Show" co-star Ed Asner tweeted:

"Star Trek" actor George Takei mentioned Moore's famous, luminous smile:

Leslie Moonves, CBS Corp. chairman and CEO, honored the star of two of the network's most revered classic sitcoms, "The Dick Van Dyke Show" and her eponymous comedy. In a statement, he said, "Mary Tyler Moore was a once-in-a-generation talent. She will be long remembered as a gifted actress, television pioneer and a role model to so many. CBS has lost one of the very best to ever grace our airwaves and our industry has lost a true legend and friend."

Other celebrities tweeted their sorrow at Moore's death, many mentioning how she pioneered roles for women on television:

Want more stuff like this? Like us on Facebook.