Casey Affleck takes his eldest son Indiana August, who turns four later this month, shopping in Hollywood on Thursday.

The father-son swashbuckling pair took their plastic swords and stopped off at a bookstore, leaving with a book about Curious George.

Casey, 32, and his wife, Summer Phoenix, welcomed their second son in November last year. No official word on the baby’s name yet.

Casey Affleck grabs lunch with his oldest son, Indiana August, 2 1/2, at Tropicalia Brazilian Grill in Los Angeles on Thursday.

The 32-year-old Oscar-nominated actor was accompanied by his wife Summer Phoenix (pictured below) and the couple’s newest son, 2 months. (They haven’t released the baby’s name yet.)

After lunch, Summer and her little one went home while Casey and Indiana returned to day camp for a while. How cute are Indiana and his play pal?!

25+ pictures inside of Indiana Affleck and papa Casey… More Here! »