Please pardon if this has been discussed in the past... But, My gut feeling is that Bonzo also wore a wig at the Shepperton. It was obvious that Jonesy wore one, but even Bonzo's hair was cut shorter by August 1974, wasn't it? It seems that his hair was very long and quite curly for the Shepperton filming, which may indicate a wig. Also, Robert was probably 10 pounds heavier by the time Shepperton was filmed, but Bonzo had to have an extra 20 pounds on by then.... Any additional thoughts?