Kathy Griffin celebrated turning 65 in true D-List-royalty fashion — with a cheeky, star-packed birthday dinner party hosted by her close friend, pop icon Sia.

Sources tell Page Six’s “Virtual Reali-Tea” that the intimate gathering was designed with a wink. Griffin was seated in a small room connected to the bathroom, and the table was positioned so guests would pass by, see her and inevitably shower her with compliments throughout the night.

The setup played out like a scene from “My Life on the D-List,” evoking the self-aware humor of Griffin’s beloved Bravo reality show and the era that helped transform her into a pop-culture fixture.

The guest list matched the fun, eclectic energy of the evening, as seen in a photo exclusively obtained by Page Six.

Attendees included Lisa Rinna a

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