Former TOWIE stars Jessica and Mark were guests at both the Sony official party, where guests included Adele and Rebecca Ferguson, and Justin Bieber's official party at Tape London following the main awards
And judging from Jessica's Snapchats from the evening, Justin's bash was a pretty amazing event!
Alongside various snaps of booze laden tables, sparklers in bottles and people generally had a good time, she shared some of the man himself, showing just how close she got to Justin, who had earlier picked up the 'Best International Male' prize and performed.
She shared a ton of Snapchats from the awards as well, showing just how close to the stage she and Mark had been sitting, meaning they got top views of all the winners and acts including Adele, Rihanna, Jess Glynne, Little Mix and Coldplay.
Rihanna seemed to be a particular favourite of the sister and brother as Jess shared a short Snap of them dancing away to her performance of 'Work'.
All in all, it seemed a pretty good night and we're just a tad jealous!