Diane Saywer

In this image released by ABC, Diane Sawyer, host of the early morning news show "Good Morning America," is shown with flowers on her last day on the program, Friday, Dec. 11, 2009, in New York. Sawyer will take over the "World News" anchor chair on Dec. 21, succeeding Charles Gibson, who will retire on Dec. 18.

From left, Diane Sawyer and "60 Minutes" creator Don Hewitt in a CBS News control room on Oct. 1, 1985. Sawyer worked as a local TV reporter in Kentucky before being hired to serve in the Nixon administration in 1970. In 1978, she joined CBS as a political correspondent and became a co-anchor of the "CBS Morning News" in 1981. In 1984, she became a correspondent for "60 Minutes," where she remained for five years.

Diane Sawyer is seen in a Feb. 16, 2004, photo. In 1989, she moved from CBS to ABC to co-anchor "Primetime Live" with Sam Donaldson. She then co-anchored "20/20" from 1998-2000, and became the co-anchor of "Good Morning America" in 1999 with Charles Gibson.

Charles Gibson, left, and Diane Sawyer are seen as "Good Morning America" co-hosts on Sept. 13, 1999. In 2006, Gibson left "GMA" to become the anchor of "World News Tonight." On Sept. 2, 2009, it was announced that Sawyer would succeed Gibson in that anchor chair.

Past and present correspondents of "60 Minutes" join Don Hewitt, executive producer, lower left, on stage for Lifetime Achievement Award at the 24th Annual News and Documentary Emmy Awards in New York, Sept. 3, 2003. Left to right, at rear, Christiane Amanpour, Diane Sawyer, Steve Kroft, Meredith Vieira, and executive editor Philip Scheffler. Middle row, Bob Simon, Lesley Stahl, Ed Bradley, Morley Safer and Andy Rooney.

"Good Morning America" co-host Diane Sawyer is seen in a Nov. 22, 2004, photo.

Actress Ellen DeGeneres, left, and television personality Diane Sawyer pose as they arrive for the 2006 Matrix Awards Monday April 3, 2006, in New York. The awards acknowledge outstanding women who have distinguished themselves in the communications fields.

Diane Sawyer and her husband, director Mike Nichols, arrive atthe Broadway opening of "Three Days of Rain" on Wednesday, April 19, 2006, in New York. Sawyer and Nichols married in 1988 and have no children of their own. Nichols has three children from his three previous marriages.

ABC's Charles Gibson is kissed by co-hosts Robin Roberts, left, and Diane Sawyer as he said farewell to "Good Morning America" in New York, June 28, 2006. Gibson left the morning news program to anchor ABC's "World News Tonight," a position Sawyer will take over on Dec. 21, 2009.

Mike Nichols, director of "Charlie Wilson's War," arrives with his wife, Diane Sawyer, at the world premiere of the film in Los Angeles, Monday, Dec. 10, 2007.

"Good Morning America" co-host Diane Sawyer arrives for Walter Cronkite's funeral at St. Bartholomew's Church on Park Ave. in New York, Thursday, July 23, 2009. Cronkite died last Friday at his Manhattan home at age 92. — AP Photo/Kathy Willens

"Good Morning America" co-host Diane Sawyer arrives for Walter Cronkite's funeral at St. Bartholomew's Church on Park Avenue in New York, Thursday, July 23, 2009.

Diane Sawyer, co-anchor of the early morning news show, "Good Morning America," center, is shown with her colleagues, Robin Roberts, left, and Chris Cuomo during a champagne toast on her last day on the program, Friday, Dec. 11, 2009, in New York. Sawyer will take over the "World News" anchor chair on Dec. 21, succeeding Charles Gibson, who will retire on Dec. 18.