Jacquelyn Martin, Associated Press
Actress Sally Field speaks at a celebration of AARP's 50th anniversary held in Washington Thursday.

Actress Sally Field had some advice for the mature crowd celebrating AARP's 50th anniversary on a sunny Thursday at the Lincoln Memorial: Don't get burned.

"I'm worried about you all," she said. "I hope you put some sun block on!"

Field joined tennis star Martina Navratilova, astronaut Buzz Aldrin, NASCAR champion Richard Petty and Elder Bernice King — daughter of Martin Luther King Jr. — to honor the advocacy group for people 50 years old and above.

Leeza Gibbons was the master of ceremonies and Patti Austin and Wynonna Judd sang.