More than 250 power women “poured into 425 Park Avenue on Friday morning,” a source told Page Six, to attend a breakfast fundraiser for Andrew Cuomo’s mayoral run.

We hear that Brooklyn Assemblywoman Latrice Walker made a surprise appearance to speak in support of Cuomo and give her endorsement.

Also spotted the scene were political fundraiser, donor and activist Patricia Duff, Serena Roosevelt, Melissa DeRosa, Second Shift co-founder Jenny Galluzzo and more.

The invitation seen by Page Six included hosts such as Tribeca Enterprises co-founder Jane Rosenthal, Renee Rockefeller, Margie Loeb, Tanya Zuckerbrot, Jen Bayer, Simone Levinson, Judith Hope, Fern Mallis, Jennifer Gilbert, Harriet Schleifer and former Nassau County executive Laura Curran.

Also there were family members like matriarch Matilda Raffa Cuomo, sister Maria Cuomo Cole, sister-in-law (and wife of Chris Cuomo) Cristina Greeven Cuomo and daughters, Cara, Mariah and Michaela.