Anne â€” The design looked familiar, so we must have seen it in and around the West Bank, Luxor, Karnak, and other sites along the Nile. Janet found it first in the guidebooks.
It is a stylised representation of the papyrus flower, seen most prominently on the capitals of the many papyriform columns around the Solar Court of Amenophis III (1387â€“49 BC) and the Hypostyle Portico (the entrance to the Court) at the centre of the original Temple of Luxor. The inner sanctum of this original temple is reached through a series of rooms to the SW. Rameses II (1279â€“13 BC) remodelled the temple by extending it at a slight angle to the original alignment to the NE, lining up his immense pylon and other structures with the temple complex at Karnak about two miles away.
There are also papyriform columns at Karnak, but they are not as prominent in the same way.
Besides its many practical uses, papyrus had religious significance as symbolic of the primeval swamp from which all life emerged.
No particular connection with Tutankhamun. The person who named the design obviously had the Temple of Luxor in mind.
I hope that is useful.