Stunning Sandra Lee stepped out alone on the red carpet for the first time since confirming her split from Gov. Andrew Cuomo.

The TV chef, author and former New York state first girlfriend appeared at the Smithsonian’s American Portrait Gala in DC on Sunday in a gold gown by Simin Couture.

Lee was seen chatting with fellow guests, including Hillary Clinton and Clive Davis, at the event, which honored Nobel laureate Frances Arnold, Jeff Bezos, Lin-Manuel Miranda, businesswoman Indra Nooyi, Anna Wintour, and Earth, Wind & Fire — with portraits of each added to the gallery.

Lee and Cuomo announced their split in late September, saying their lives had gone in different directions. The Post had earlier first reported on the split, revealing Cuomo had been spotted a lot in Albany after the couple put the house they shared in Westchester County on the market in May.

A source told Page Six that Lee has recently been spending more time in LA, where she is working on a number of TV projects and connecting with family. While she still remains very close to Cuomo’s daughters, we’re told, Lee has rented a home in Beverly Hills next door to Rihanna.