The stars of the music world have turned out for the industry's biggest night at the 58th Grammy Awards.
Flying the flag for Britain was Ed Sheeran who scooped Best Song for his hit Thinking Out Loud.
There were also performances from Adele, Ellie Goulding and Lady Gaga who staged a tribute to the late David Bowie.
Rihanna has pulled out of the Grammys at the last minute "on doctor's orders".
A statement from her representative said: "After Grammy rehearsal today, Rihanna's doctor put her on vocal rest for 48 hours because she was at risk of hemorrhaging her vocal chords.
"The antibiotics she has been on for three days did not kill the infection adequately therefore she cannot perform safely."
Adele has defended her "out of tune" live performance at the Grammys.
It was the biggest night of the music calendar. Here's who won what at the 58th Grammy Awards.
It was one of the most anticipated performances at the Grammys - but it didn't go down well with everyone.