I had Krimson Queen and Krimson Princess for many years and thought they were the same plant until someone on another fourm who grew and sold hoyas for a long time told me that one was Krimson Queen and the other Krimson Princess and explained the leaf coloration.
I see
Wax Plant (Hoya carnosa 'Picta') has leaves with white centers and green margins too. It look a lot like Krimson Princess but maybe the leaves are a bit pointier and smaller in size?
And
Wax Plant (Hoya carnosa 'Variegata') has the same leaf coloration too. I see two photos in this database entry that appear to be the variegated Hindu Rope.
Both of my plants ended up reverting to solid green leaves so I had no idea which was which so they just both became Hoya carnosa.
