Kris Humphries isn't letting his impending divorce
from Kim Kardashian
keep him from hitting the party circuit.
The basketball star and four guy friends recently popped into a Perrier-Jouet-sponsored bash at hotspot Bagatelle in New York City.
Providing music for the night: Beyoncé
's sister Solange, who was deejaying.
Humphries and his group, meanwhile, headed to the back of the bar for a drink when they got in, an onlooker tells PEOPLE.
"Kris posed for a camera phone with one partygoer," the source says. "They stayed about 40 minutes before taking off." – Jessica Wedemeyer