Brotherly duties for Justin Bieber

Justin Bieber is certainly pulling out all the stops for his younger sibling’s visit.

He even lovingly planted a smooch on his little brother on the red carpet of the Grammy’s just days ago.

The 21-year-old Sorry hitmaker brought six-year-old Jaxon out for a fun-filled day at Universal Studios Hollywood on Thursday.

No doubt the two Bieber boys enjoyed a day of family bonding as they hit the highly-popular Los Angeles amusement park together.

Justin even bought the youngster a new basketball to play with as the he was seen holding onto the rubber spear with The Simpsons character Krusty The Klown on it.

The What Do U Mean singer is definitely a proud brother as on the same day he posted a photo of his baby brother riding a skateboard and wrote, “New prodigy.”