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Kylie Jenner was joined by Kourtney Kardashian's ex, Scott Disick, when clubbing with her boyfriend, Tyga, at West Hollywood nightclub 1 OAK. Kylie seemed to get along just fine with Scott despite his strained relationship with her sister.

Tyga opted for a casual t-shirt and ripped jeans combo for the night out while his girlfriend flashed a black Moschino bra underneath her oversized white blazer that she teamed with thigh-high boots. She finished off her look with a blue wig and dark shades.

Scott Disick Hangs Out With Kylie Jenner and Tyga at West Hollywood Nightclub--See the Photo! https://t.co/hjq1GPGKkx

— E! Online (@eonline) August 29, 2015

Many famous faces were also spotted that night at the club which hosted The Weeknd's album release party. They were NBA star Kevin Durant, femcee Nicki Minaj & rapper boyfriend Meek Mill, pop singer Selena Gomez, and actor Leonardo DiCaprio.

While Scott partied, Kourtney had a bonding time with their youngest child, 8-month-old Reign. She posted a couple of mother-son selfies with the adorable baby boy on Instagram. She has two other kids with Scott, 5-year-old son Mason and 3-year-old daughter Penelope.

Smiling.

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A photo posted by Kourtney Kardashian (@kourtneykardash) on Aug 28, 2015 at 8:11pm PDT

Serious.

A photo posted by Kourtney Kardashian (@kourtneykardash) on Aug 28, 2015 at 8:12pm PDT