Talking about the shoot, Kate said: "Ryder would say to me, 'I saw Penelope in the lobby today.'
"You could see that he recognised what a beautiful woman she is. He's so cute!"
Kate recently revealed how confident Ryder is and knows exactly what he wants.
The 30-year-old star - whose mother is Hollywood actress Goldie Hawn - said: "My mother has said, 'He'll be a director of something because everything is specific.' You know, we went to this birthday party where everybody was getting their faces painted and the kids were going, 'I want to be Spider-Man or Batman.' But Ryder was like, 'I want a red face and I want white around the eyes, I want a white mouth, I want spikes and yellow dots on each one.'
"But the face painter didn't do it exactly like that, and in the car later, Ryder was on the phone with his dad Chris and I said, 'Tell daddy about your face.' And he goes, 'She did it totally wrong.' I was like, 'What do you mean?' He said, 'They're not mountain peaks, they're hills. They're not peaks, they're not sharp.' I told him, 'Honey, but they look great.' Then he replied, 'No, mom. They're hills.' Oh yeah, he knows what he wants!"