America's First Lady , Mrs Jacqueline Kennedy , wife of the President , hugs her brother in law Prince Radziwill , who in turn bestows a kiss on his wife's sister after she stepped down from the Boeing Airliner in which she and Princess Lee Radziwill had flown from Karachi following their Tour of India and Pakistan . Mrs Kennedy has arrived for a three day private visit to London during which time she will lunch with Queen Elizabeth . 26 March 1962