Although the Royal Warrant specified the design of the coat of arms, by the mid-1940s at least 20 variants were in use. One month prior to New Zealand's adoption of the Statute of Westminster (which formally accepted the full external autonomy offered by the British Parliament) on 25 September 1947, a special committee was formed by then Prime Minister Peter Fraser. Responsible for the "redrawing and standardisation of the Coat of Arms", the committee consisted of Alister McIntosh, Joe Heenan, Colin Aikman, Frank Corner, Foss Shanahan and Professor John Cawte Beaglehole. One of the committee's concerns was that the female supporter looked too much like a "Soviet heroine". Following the election of the First National Government in 1949, the new Attorney-General, Jack Marshall (later Prime Minister) took up responsibility for the committee. Marshall requested the woman to be re-drawn based on the likeness of Grace Kelly, a favourite actress of his.