Jake and Vas, who are both in the fashion industry, attended the party hosted by House of Fraser and Shortlist magazine on Monday night (15 June).
The bash saw a host of famous faces at the party, including Rosie Fortescue and Chloe Green.
Appearing on ITV's This Morning last week, Jake said he has enjoyed his experience on the show so far.
"It's been amazing really," said Jake, who joined TOWIE during series 14 last year. "I've got a clothing brand, well two clothing brands and it's showing today at London Collections for Men, so it's been amazing exposure for me getting it out there to everyone."
However, having little privacy is something he's had to adjust to: "The privacy part is quite difficult because everyone knows your life within days of being in the show. It is a bit different, but I like it, it's been great."
TOWIE airs every Wednesday and Sunday at 10pm on ITVBe.
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