Patrick Schwarzenegger: Sand Castle with Sheer Mama Maria Shriver!

Patrick Schwarzenegger sits in the sand with his sister Katherine while spending time with family on Friday (March 29) in Hawaii.

The 19-year-old actor was joined by his girlfriend Taylor Burns and his mom Maria Shriver, who showed off her body with a sheer bathing suit.

PHOTOS: Check out the latest pics of Patrick Schwarzenegger

Patrick was seen building a sand castle with his family.

The day before, Patrick was spotted kissing Taylor while swimming in the ocean.

30+ pictures inside of Patrick Schwarzenegger and Maria Shriver enjoying the beach…