Warner PartyTodd Williamson/Getty

After the last trophy was handed out at the Staples Center, Fergie, Lana Del Rey, John Legend and more of the industry’s hottest stars made a beeline to the famed Chateau Marmont Hotel for a post-Grammy bash hosted by the Warner Music Group and InStyle. “This party is so crowded!” declared Blake Shelton (in Ermenegildo Zegna), who made the rounds with wife Miranda Lambert (in Atelier Pavoni). After stopping by the Champagne Bar for a glass of Beau Joie bubbly, guests rocked out to a performance by Bruno Mars. Luckily for late arrivals like Paul McCartney, the dance floor stayed open well into the early hours of the morning. See more party photos in the gallery!

— Bronwyn Barnes, with reporting by Lindzi Scharf