Maybe Justin Bieber really is cleaning up his act?!

The unruly performer took his little brother, Jaxon, out shopping in Los Angeles yesterday -- and it looks like the Bieber boys were having a ball!

The 21-year-old "Boyfriend" singer treated his five-year-old half brother, who was wearing an adorable Spiderman shirt, on a little jaunt to shoe store, Sportie LA on trendy Melrose Avenue.

The adorable twosome caused quite a commotion on the busy Los Angeles street. We guess it's good that JB doesn't go anywhere with out his team of bodyguards!

Justin is clearly still on another stop on his Good Guy 2015 Tour -- and we are into it. Justin held the his little bro's hand as the two looked like the coolest kids in town!

The Canadian singer has also been showing love for his bro, who is dad Jeremy's youngest son, on Instagram. On Monday, the "Never Say Never" posted a too-cute pic of the duo with the caption, "Love you more than anything Jaxon." Yesterday, the Biebs shared a pic of tough stuff Jaxon making a "sign of the beast." Uh oh! Bad boy in training?!