Betty White

Invitations are going out for NBC's 90th birthday celebration for beloved TV icon Betty White. The dinner-style event is expected to be filmed in Los Angeles before year's end and will air as a special sometime close to Betty's milestone on January 17, 2012.

Among the famous faces likely to offer on-camera tributes: stars from Betty's series, The Mary Tyler Moore Show and Hot in Cleveland, as well as funny ladies from the NBC comedy lineup. Additionally, TV Land's Cleveland is planning an episode centered around the birthday of Betty's character, Elka Ostrovsky. The special is being executive produced by Brad Lachman, Steve Ridgeway and Jon Macks, whose credits include The Tonight Show, the Emmys and the Academy Awards.

NBC also has a reality series hosted by Betty, titled Off Their Rockers, which is awaiting an airdate. The series features senior citizens playing pranks on unsuspecting youngsters.

Retirement clearly is not a word in this active lady's vocabulary.

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