There are no penises involved, therefore it's 100% yuri.
That’s a defensible position, although one I’m sure will not meet with 100% approval.
Hmm, thinking of the possible locations for essential maleness, I wonder just how “boyish” a prince-type girl can get before some people would claim it’s het?
(Is there a typographical emoticon for “evil cackle”? I think I need one of those.)