Nancy Reagan last night lost her balance and fell as she arrived to watch a speech by Republican freshman senator and Tea Party darling Marco Rubio

The frail former First Lady was being escorted to her seat in the Ronald Reagan Presidential Library, in Simi Valley, California, by Senator Rubio when she lost her footing and took a tumble.

Mrs Reagan had asked Senator Rubio to speak at her late husband's presidential library following his election to the U.S. Senate last year.

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