Back in February, actress Sarah Michelle Gellar confirmed that she is coming back to reprise her role as Kathryn Merteuil in NBC's Cruel Intentions TV series. Last month, she took to Instagram to tease her new brunette look, while showing fans the cover page of the pilot script. Now that filming is currently under way, the actress took to Instagram yet again, revealing two new photos from the set, one of which was on location in San Francisco with the Golden Gate Bridge in the background, and the second showcasing the actress taking a break from the shoot while taking a steamy bathtub photo.

The original Cruel Intentions movie, based on the novel of the same name by Choderlos de Laclos, centered on Sarah Michelle Gellar's Kathryn Merteuil, who seeks revenge after being dumped by her beau Court Reynolds (Charlie O'Connell) for the innocent Cecile (Selma Blair). Kathryn challenges her step-brother Sebastian Valmont (Ryan Phillippe) to seduce Cecile, while, at the same time, they have an ongoing bet about whether or not Sebastian can seduce Annette Hargrove (Reese Witherspoon), the daughter of their private school's headmaster. The original movie also starred Louise Fletcher, Joshua Jackson, Eric Mabius and Sean Patrick Thomas, but it isn't known yet if any of Sarah Michelle Gellar's co-stars will be joining her in the new series.

The TV series is set 15 years after the events of the movie, centering on Kathryn Merteuil as she vies for control of Valmont International, along with the "soul" of Bash Casey, the son of Sebastian Valmont and Annette Hargrove. The series will be produced by the original movie's writer-director Roger Kumble and producer Neal H. Moritz, along with Lindsey Rosin and Jordan Ross. Both Lindsey Rosin and Jordan Ross were behind the stage production The Unauthorized Musical Parody Of Cruel Intentions, which debuted in Los Angeles this past May at Rockwell Table & Stag, and generated plenty of buzz. The stage play was attended by Roger Kumble, Sarah Michelle Gellar, Reese Witherspoon and Selma Blair.

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The Cruel Intentions cast also includes Taylor John Smith as Bash Casey, Kate Levering as Annette Hargrove, Coby Bell as Pascal Barrett, Kathryn's husband who is a powerful attorney and Nathalie Kelley Carmen, who works for Kathryn and Pascal. The show will focus on Bash, who finds his father's private journal and discovers all of his illicit deeds, which opens him up to a world of power and corruption. Samantha Jade Logan and Sophina Brown have also been cast in the pilot.

Now that production on Cruel Intentions is finally under way, hopefully Sarah Michelle Gellar will continue to share more images from the set, although it isn't known how long filming is expected to last. NBC will make a final decision on whether or not Cruel Intentions will move forward to series ahead of its upfront presentation in May, but it's possible the network may hand out a series order before then. While we wait to hear more about the fate of NBC's Cruel Intentions pilot, check out Sarah Michelle Gellar's latest Instagram photos below.