There's always one guest who ends up making out with the mistletoe or falling into the fire.
It happens. It's the holidays.
Seth threw a Christmas party at his Beverly Hills home, and it sounded like a right royal knees-up (translation: a great time).
A tent was set up on MacFarlane's tennis court, and under it a 50-piece orchestra played while partygoers - including Courtney Love, Scott Speedman, Adam Corolla, Katharine McPhee, Cheryl Burke, Darren Criss, LA Reid, Marilyn Manson, Meghan Trainor, Ted Danson, Zac Efron and John Stamos - entered through a snow globe that also doubled as a photobooth, according to Page Six.
MacFarlane, who released a Grammy-nominated jazz album, invited guests on stage to sing along to Frank Sinatra tunes.
Christina Aguilera, with whom Seth sang "New York New York" at December 3rd's Sinatra Voice of a Century event, was the only guest who refused to join in.
"Seth asked her five times to come up [and sing] and she refused,” a source told Page Six, not because she was being a diva, but because she was sauced.
“She was a mess,” added the source. “The reason she didn’t get up is because she was wasted.”
Things got fuzzier as the night went on. When Aguilera left, she had to be helped by her fiance, Matt Rutler and a friend.
“She was wearing 6-inch custom Louboutins. She was literally wobbling," the source noticed.
“She nearly fell into a Christmas tree.”