The "Baby" hitmaker sported his spectacles and a colorful purple jacket as he popped into Ray's Pizza for a bite to eat before heading over to the Dolce & Gabbana store on Madison Avenue.
Once inside, Justin joined up with buddies Usher and Scooter Braun, while also mingling with fellow guests such as Brooklyn Decker, Anna Wintour and Pattie Mallette.
Having made the D&G appearance to help raise funds for Pencils of Promise, Bieber tweeted as he left the high-end boutique, "that was not what i expected and a wild day. but in the end we raised enough for charity to build another school with @pencilsofpromis"
The 17-year-old proceeded straight to the airport, as he later wrote, "on the plane flying thru the night. thank u 2 all the fans who showed up 2nite. got to rock with my brothers @asherroth and @usherraymondiv"
Continuing on, Justin finished up by tweeting, "headed back out west to work on this #MUSIC. excited for you guys to hear it. Christmas album this november. #charity"
