The Keeping Up With The Kardashians star partied up a storm with pals at 1OAK nightclub in Southampton, New York on Saturday, 21 June.
It was a belated birthday celebration for Scott, who actually turned 31 on 26 May. A very belated celebration.
The reality star was without pregnant girlfriend Kourtney Kardashian, 35, who was over in Los Angeles helping her niece North West celebrate her first birthday with family.
Scott and Kourtney have been based in New York this month as they film upcoming E! reality show Kourtney & Khloe Take The Hamptons!
The Keeping Up With The Kardashians spin-off will follow sisters Kourtney and Khloe as they relocate to the posh Hamptons area to open a pop-up store for their boutique Dash.
And it appears we'll be seeing Scott's birthday celebrations on screen, as a source told InTouch Weekly of his party: "The reality star arrived with his entourage of male friends at 12:30 a.m. and an E! TV camera followed them into the crowded nightclub."
The insider added: "Being with his friends from Long Island it was as if he was reverting to the behaviour of a teenager and didn't seem to have a care in the world."
While Scott downed champagne and danced the night away in New York, his missus was enjoying some relaxing time with her family at a child-themed Coachella party in California, thrown for Kim Kardashian and Kanye West's daughter North.
The extravaganza - dubbed Kidchella - featured playground rides including a ferris wheel, a karaoke booth, and food and drink carts.
Kourtney - who is pregnant with her third child - attended with her and Scott's two children: Mason, four, and Penelope, one.
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