Between the "Bad Blood" video premiere and her eight award wins, the 2015 Billboard Awards virtually belonged to Taylor Swift. But the award for Best After-Party Photo Post of the Night definitely goes to Taylor's brother Austin.

Austin's caption is accurate, Sunday was a wild ride for the 23-year-old. First he graduated from the University of Notre Dame in South Bend, Ind. (with his proud sister Taylor in attendance). Then the two siblings jetted to Las Vegas for the awards show festivities. Finally, as the poet R. Kelly once sang, "after the party is the after-party" — and nobody throws a hotter after-party than one Taylor Swift.

As the above photo illustrates, a classic T Swift Affair has two key ingredients: Every single celebrity you care about, and a photo booth. The pictures from Sunday night that have made their way online provide plenty of grist for the mill, and as E! points out, at least one of them reveals another Tayvin PDA moment. But the above photoset is our favorite for all of the moments they capture — the shot in the middle especially.

Can we talk about Louis' expression as Niall gives Ed Sheeran a peck? Taylor and Calvin giving each other Eskimo kisses while Austin smolders into the camera? It's basically the modern-day equivalent of da Vinci's Last Supper, for all that is going on here. Austin has officially swiped another completely made-up award from Lupita Nyong'o's brother: Luckiest Relative of a Celebrity to Appear in a Photo Full of Famous People.

See All of Taylor Swift's "Bad Blood" Character Posters