Lord Disick -- sporting some scruff -- wore a simple T-shirt, gray skinny jeans and a brown fur coat over a blue cardigan.
Always one to step out in style, we couldn't help but notice the huge tear on the back of the right sleeve of Disick's coat. An eyewitness told ET that the jacket was in normal condition when Disick was first spotted earlier in the night.
In addition to the rip on his jacket, he also appeared to have acquired some cuts on his right hand.
The mystery blonde complemented Disick's look, rocking a white faux fur jacket with black skinny jeans and high-heeled booties.
According to the eyewitness, Disick, the blonde beauty and one of her friends partied until 5 a.m. The trio first met up around 10 p.m. for dinner at Koi, a Japanese restaurant in SoHo, where Disick and the blonde took a seat next to each other.
Outside of the restaurant, Disick was cautious and avoided any sign of PDA, walking separately from the girls as they all hopped into a car together, the eyewitness told ET. They then headed to the swanky Up & Down nightclub, where they partied for about an hour. According to the source, they ended their night of celebrations at the SoHo House hotel. From there, Disick and the blonde left together and went back to the Trump SoHo hotel, where Disick was staying, just hours before his flight.
This isn't the first time Disick's partied in NYC this month, however. Last Friday, he hosted a private event at 1Oak during New York Fashion Week with his close pal and Kylie Jenner's boyfriend, Tyga. The 26-year-old rapper performed some of his hits, like "Rack City," "Fade" and "Ice Cream Man," while Jenner and music producer Travis Scott watched from Butter Group owner Richie Akiva's private VIP table.
A source tells ET that although Disick was clearly having a good time inside the nightclub, he didn't have a drink in hand.
As ET previously reported, Disick left a 30-day rehab program in Malibu, California, last November, and his road to recovery and highly publicized breakup with Kourtney Kardashian is being played out on the current season of Keeping Up With the Kardashians.
In an episode of the hit reality series that aired last month, Disick told Khloe Kardashian that his life was "officially over." Watch the video below to hear more.