The singer joined James Corden for the "Late Late Show's" epic segment which had them driving around the streets of Los Angeles once again sining songs, fleeing the paparazzi and going on a little shopping spree.
The last time they did "Carpool Karaoke," Bieber and Corden switched outfits, but this time they decided to go shopping. After throwing it back old school by singing Justin's early hit, "Never Say Never" and doing some belly rolls while singing to "What Do You Mean" Justin and James went for their fashion makeover.
They both agreed to dress each other with Justin wanting James to look "sleek, but not too over-the-top" while James went for something totally outrageous.
James was totally feeling his look -- a hooded sweatshirt and ripped jeans (very Bieber) -- while the "Sorry" singer came out in a sequined green glitter jacket, patterned sweater and a hat, but like James said, he totally made it work.
After doing their best to avoid the paparazzi, the two got back in the car, blasted Kanye's "Stronger," talked about that whole nude photo scandal in Bora Bora and sang along to one of Justin's favorite song, Alanis Morissette's "Ironic."