Mary Tyler Moore Show
photo: CBS

Mary Tyler Moore — the iconic actress who could "turn the world on with her smile" — died Wednesday, January 25. She was 80 years old.

Arguably one of television's first mainstream feminists, Moore played the career-focused Mary Richards on "The Mary Tyler Moore Show." The show aired from 1970 to 1977, and many people deemed Moore's role as a single, young professional as "groundbreaking."

Female powerhouse Oprah Winfrey even named Moore as her idol and reportedly kept an "O"  by her fridge — just like Moore’s character famously displayed an "M" on her wall.

The Oprah Winfrey Show Mary Tyler Moore
photo: The Oprah Winfrey Show

"I was 16 years old when I first saw this groundbreaking show," Winfrey revealed on her talk show, where she held a special "The Mary Tyler Moore Show" reunion in 2008. "I watched this show every Saturday night like my life depended on it."

Moore also costarred on "The Dick Van Dyke Show," where she first became a household name.

Winfrey added, "Mary was a trailblazer for my generation. She's the reason I wanted my own production company."

Winfrey has yet to comment on Moore's death, but many of Moore's friends and colleagues in the entertainment industry have shared their heartbreak:

Mary Tyler Moore died
photo: Twitter
Mary Tyler Moore
photo: Twitter
Mary Tyler Moore died
photo: Twitter
Mary Tyler Moore died
photo: Twitter
Mary Tyler Moore died
photo: Twitter
Mary Tyler Moore died
photo: Twitter
Mary Tyler Moore died
photo: Twitter
Mary Tyler Moore died
photo: Twitter
Mary Tyler Moore died
photo: Twitter
Mary Tyler Moore died
photo: Twitter
Mary Tyler Moore died
photo: Twitter
Mary Tyler Moore died
photo: Twitter

RIP Mary Tyler Moore.

photo: PBS

You will be missed.