Liza Minnelli and Miley Cyrus are set to join the cast of the Sex and the City movie sequel, according to reports. Minnelli will perform at a gay wedding, while producers are still trying to strike a deal with 'Sex' fan Cyrus over her involvement in the movie.

An insider tells Life & Style magazine, "They've asked her, but she hasn't confirmed. Right now, they're just holding the space for her."

But fans can count on Minnelli - she'll sing as part of the celebrations behind a gay union between beloved characters Stanford Blatch and Anthony Marentino, played by Willie Garson and Mario Cantone.

The set insider says, "The scene is hilarious."

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