Madonna is always up to something interesting. This weekend, she decided to combine the Jewish holiday of Purim with everyone’s favorite HBO fantasy series.

The queen of pop posted the above photo to Instagram, writing, “Happy Purim!!!!! All Hail All Queens! ##certainty.”

It is customary for some Jewish people to dress up on Purim, though typically it’s more of a “masquerade,” with masks. But a lot of Synagogues hold masquerade parties, perhaps Madonna is going to one of those.

Whatever the reason, she makes a pretty good khaleesi, no? “Game of Thrones” returns Sunday, April 6 on HBO.