By Swift's side all night was her brother, Austin Swift, and her longtime pal, Lorde. The trio even hit up the party's official portrait studio for a glamorous snap by Mark Selinger.
Swift's BFF Selena Gomez was also on-hand for the festivities, but a source inside the soiree reveals that she and Swift did not appear to spend any quality time together. Rather, the "New Romantics" singer stuck close to Lorde all night and ultimately made her exit with a group that included Gomez's ex, Nick Jonas.
Swift and Lorde kept mum on social media all night, opting not to share any snaps from their Oscar-night adventures -- but Swift's 23-year-old brother did post a selfie to his Instagram account.
"Had a great time but when I heard 'fair party' I thought there would be rides," he joked.