One thing is true: The suit on the left was never used during the Aloha Special. It is a suit made for touring and this was indeed a larger version.
But Elvis did use two different suits during both performances because at first two versions were made. One for the 12th and one for the 14th. If you compare pictures of the rehearsal sho with pictures of the satellite show you can see that the pattern on the belly is different.
Where the eagle's tail ends you see two tiny gold stars on each side of the belly. On the reahearsal suit an extra large gold star is present on the right side. That one is missing from the satellite suit.
I also have a copy of the bill of sale dated January 17th, 1973. A bill for two jumpsuits. One with the long cape and one with matching cape.
Both suits were delivered on time. Elvis never got a bill for something that was not delivered.
Another myth is that Bill Belew designd this suit. This is simply not true because they were designed by Gene Doucette.