Justin Bieber capped off his trip to New York City by hitting up the club with his boys. JB and his crew, which included long-time friend Alfredo Flores, hit up three of the hottest clubs in Manhattan's trendy Chelsea neighborhood. JB, who traveled to the big Apple to support his buddy Jaden Smith's movie premiere for 'After Earth' earlier in the night, headed back to his hotel after the film before heading out with a big group of friends. According to sources, the group snuck into Avenue Nightclub through a pizza shop, as security tried to block photogs from snapping pics. Next, the group, along with some new friends they met at Avenue, headed out to continue to the party at Marquee, where famed DJ Martin Solveig as spinning. For the group's 3rd and last stop of the night they headed to ultra-exclusive hot-spot 1Oak, where they entered the backdoor. And when all was said and done, JB exited the 1Oak, with a lollypop in his mouth and headed back to his hotel to pack his bags and jet off to spend some time with his family for his adorable sister's 5th birthday. We're loving the fact that Justin opted for what we'll call a costume change -- let's do a quick side by side shot. Here's dapper, classy Justin and here's cool, clubbed-out Justin. Which version do you like better?.