ET's Cameron Mathison caught up with Hudson and her son at the event -- which benefitted MindUP, an educational program created by The Hawn Foundation -- and the cute mother-son duo dished on sharing nearly the same hairstyle, after Hudson shaved her head for her new project with singer Sia.
The pair also reflected on what it means for them to come out and support Hawn's charitable initiatives, and Ryder articulated the ways in which he's reaped the benefits of the MindUP program's curriculum.
"As I've grown up, this [program] is about as old as I am, and so I've gotten to watch this get bigger and better as I grow up," he shared. "So it's always been helpful for me in everything… It's really great."
Listening to her little boy field the question, Hudson was deeply impressed by his thoughtful response.
"Oh my god, honey," Hudson marveled. "He's so eloquently spoken."
While walking the carpet, Hudson and her son -- whom she shares with her ex-husband, musician Chris Robinson of The Black Crowes -- also posed for photos with Hudson's brother, Wyatt Russell, as well as Hawn and her longtime partner Kurt Russell.
"I just think it takes, for everyone who's coming out and talking about their experiences, it takes a lot of courage and just the domino effect has been amazing," Hudson said. "It's just time for things to change."