It was apparently taken during a dinner on April 17, reports aceshowbiz.com.
In the photo uploaded on her Instagram, the " Shakespeare in Love" star can be seen posing with Nicole Richie, Stefani, Stella McCartney, Naomi Watts, Sam Taylor-Wood and Chelsea Handler.
McCartney had also shared a photo from the dinner in which the stars struck different poses.
"Gals night out! Gwen, Gwyneth, Nicole, Chelsea, Naomi, Sam and I...," she wrote.