AMA awards 2013 ceremony in Los Angeles

Go, go, Gaga's gee-gee Photograph: Mario Anzuoni/Reuters

Katy Perry chose a geisha outfit for her rendition of Unconditionally Photograph: Mario Anzuoni/Reuters

Ariana Grande won the Kohl's new artist of the year
Photograph: PictureGroup/Rex

Lady Gaga and Taylor Swift didn't let the small matter of R Kelly come between them
Photograph: Christopher Polk/Getty

Imagine Dragons went very big on the drums Photograph: Kevin Winter/Getty Images

Jennifer Lopez had the devil's own job doing up her dress Photograph: Lucy Nicholson/Reuters

But her tribute to singer Celia Cruz went perfectly Photograph: Lucy Nicholson/Reuters

Christina Aguilera performed Say Something Photograph: Lucy Nicholson/Reuters

Kendrick Lamar treated the audience to Swimming Pools (Drank) Photograph: Michael Tran/FilmMagic

Zayn Malik, Niall Horan, Liam Payne, Harry Styles and Louis Tomlinson. They're in a band, apparently Photograph: Frazer Harrison/FilmMagic

Taylor Swift en route to collecting one of her four awards
Photograph: Larry Busacca/Getty

Fifth Harmony shot the breeze with Lil Mama Photograph: Frazer Harrison/FilmMagic

Careful, Taylor. Any more awards and you'll do your back in
Photograph: Rich Polk/Getty

Rihanna? Dressed demurely? Did someone say 'Miley Cyrus backlash'? Photograph: Lucy Nicholson/Reuters

Justin Timberlake won favorite soul/R&B album, but was some way off the pace for best beard Photograph: Kevin Winter/Getty Images

Lil Mama joined TLC on their song Waterfalls Photograph: Kevin Winter/Getty Images

Tears were shed as One Direction won favorite pop-rock band Photograph: Kevin Mazur/WireImage

Lady Gaga and R Kelly gave a presidential performance Photograph: Lucy Nicholson/Reuters

No foam fingers or twerking for Miley Cyrus this time. Just a giant space kitten
Photograph: Larry Busacca/Getty

But Miley couldn't leave without giving the crowd another eyeful of her wrecking ball Photograph: Lucy Nicholson/Reuters

Rihanna was pleased to note that her name was spelt correctly on her Icon award Photograph: Mario Anzuoni/Reuters