Queen’s close family friend and Lord Mountbatten’s great granddaughter Alexandra Knatchbull welcomes second child with husband Thomas Hooper

  • Alexandra Knatchbull is daughter of Lord Brabourne, a friend of Prince Charles
  • 37-year-old is the second goddaughter of the late Diana, Princess of Wales 
  • Marriage to Thomas in June 2016 was dubbed society wedding of the year 
  • Couple welcomed son Alden Peter Theodore Mountbatten, born on March 27