Kimberly Stewart, 40, who is the daughter of Rod and his first wife, model Alana Stewart, shared a picture with her 47,200 Instagram followers of the family gathering.
Rod and Penny, who stole the show in a plunging pink dress, posed alongside their two sons, as well as Rod’s children from previous relationships.
They were joined by Kimberly and her boyfriend Jesse, her brother Sean, 39, and eight-year-old daughter Delilah – Rod’s granddaughter – plus Ruby, 32, (daughter of American model Kelly Emberg) and Liam, 25 (son of Rod’s second wife Rachel Hunter).