Sarah Jessica Parker has excited fans with an update on And Just Like That season three.

In a post shared to her Instagram account, the actor confirmed that production on the third season of the Sex and the City spin-off was officially underway.

“Here. We. Go. X, SJ,” read the caption, alongside a close-up photo of the show script and Parker’s name plaque at a table read for the upcoming series.

sarah jessica parker as carrie bradshaw, and just like that season 2


Related: And Just Like That star reacts to season 3 cast exits

Parker also tagged a number of her co-stars in the post, including Miranda and Charlotte actors Cynthia Nixon and Kristin Davis.

Mario Cantone, who plays Anthony Marentino in the original and spin-off series, was also tagged, alongside And Just Like That regulars Nicole Ari Parker and Sarita Choudhury.

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In another exciting show update, US comedian and actor Rosie O’Donnell confirmed she will be joining the show for season three.

O’Donnell teased her character on Instagram, showing a photo of a script written by show creator Michael Patrick King and another of her in character as Mary, sporting a grey bob. “Here comes Mary #andjustlikethat @hbo,” read her post caption.

nicole ari parker as lisa todd wexley, kristin davis as charlotte york, and just like that season 2


Related: Bradley Cooper looks back on “terrifying” Sex and the City role

While the And Just Like That cast have welcomed a new addition for season three, fans will miss two characters this season.

According to The Hollywood Reporter, Miranda’s love interest Che Diaz, portrayed by ex-Grey’s Anatomy star Sara Ramirez, will not be returning for the third season.

Actor Karen Pittman, who has played professor Nya Wallace since the spin-off show’s inception, has also had to bow out, citing scheduling conflicts. A Max spokesperson confirmed at the time that The Morning Show star has “commitments to two other streamer series” and could not make time for AJLT filming.

Pittman previously explained her reduced screen time in the show’s second season, with her juggling filming for The Morning Show at the same time.