CYNTHIA NIXON CELEBRATED Pride month with a very special announcement on Instagram.

The former Sex And The City star, who is currently running for governor of New York, announced this week that her eldest child – now going by Samuel, or Seph – is transgender.

Cynthia – who has Seph and 15-year-old Charles with ex-husband Danny Mozes, and seven-year-old Max with wife Christine Marinoni – shared a photo of herself with Seph at his University of Chicago commencement a few weeks ago.

She captioned the photo:

I’m so proud of my son Samuel Joseph Mozes (called Seph) who graduated college this month. I salute him and everyone else marking today’s #TransDayofAction #TDOA .”

In a later post, she sent a message of support to the trans community and called out Donald Trump’s controversial immigration policies.

Happy #Pride weekend! LGBTQ* people have greater visibility and acceptance than ever before, but members of the trans community are at a much higher risk of experiencing violence and discrimination. Today, and every day, we stand with trans New Yorkers! #TransDayofAction #Dreamers (sic).”

DailyEdge is on Instagram!