i need a good "Princess" crown/tiara

We have a switch relationship, but more and more she is demanding control in the bedroom, begun restricting my masturbation, making me wear panties more, spanking me, and even toying my ass again (she hurt me once, now won't do it), asking me to kiss her feet is something new too.

She seems turned off by the cucking idea, but keeps bringing it up when she is grinding her pussy onto my face and making me cum from a handjob instead of sex.

She has never been fond of the term Mistress, but once I pulled out a Princess term she has been riding it all high and mighty, she even said I should get her a Princess tiara.

Any suggestions for a good one?