Getty ImagesEven Brad Pitt needs a guys night every once and awhile.
The world's most famous father of six was spotted Friday at a party for Kings of Leon at Warwick in L.A.
"Brad was really friendly and having a really good time," a fellow partygoer tells E! News. "He spent most of the night talking with lead singer Caleb Followill."
Mr. Pitt also hung out with his screenwriter pal Eric Roth and On The Road star Garret Hedlund.
Also seen out and about…
Selena Gomez hitting Sunday Jazz Night at The Living Room at the W Hollywood hotel with Kendall Jenner and her sister Kylie. Also there were Joe Jonas and his girlfriend Blanda Eggenschwiler and his brother Nick Jonas with his love, Olivia Culpo.
Kristen Stewart enjoying grilled cheese, tomato soup dumplings and some cocktails at Beauty & Essex in NYC.
Zac Efron and a couple of buddies catching the Laffest Night show at The Hollywood Improv.
JC Chasez taking selfies at the Golden Gate Hotel & Casino in Las Vegas.
Leslie Mann celebrating her birthday with hubby Judd Apatow and their daughters and some of their friends at an early performance of Michael Jackson ONE by Cirque du Soleil in Vegas.
John Legend and wife Chrissy Teigen having lunch at Father's Office in L.A.
Orange Is the New Black star Taryn Manning hosting a Friday night at Body English Nightclub at Vegas' Hard Rock Hotel & Casino.
Fergie checking out jewelry designer Deborah Pagani's work at Barneys New York flagship on Madison Avenue.
—Additional reporting by Lindsey Caldwell, Brett Malec and Alicia Quarles