Madonna flashes some skin as she attends the 2015 Grammy Awards. Picture: AP

Lady Gaga attends the 2015 Grammy Awards. Picture: Getty

Kanye West and Kim Kardashian attend the 2015 Grammy Awards. Picture: Getty

Kanye West and Kim Kardashian attend the 2015 Grammy Awards. Picture: AFP

Rihanna attends the 2015 GRAMMY Awards. Picture: Getty

Chris Brown attends the 2015 Grammy Awards. Picture: Getty

Katy Perry attends the 2015 Grammy Awards. Picture: Getty

John Mayer attends the 2015 Grammy Awards. Picture: Getty

Taylor Swift attends the 2015 Grammy Awards. Picture: Getty

Helen Lasichanh (L) and Pharrell Williams attend the 2015 Grammy Awards. Picture: Getty

Nicki Minaj attends the 2015 Grammy Awards. Picture: Getty

Maddie Ziegler (L) and Sia attend the 2015 Grammy Awards. Picture: Getty

Mike Will Made It and Miley Cyrus attend the 2015 Grammy Awards. Picture: Getty

Nicole Kidman and Keith Urban attend the 2015 Grammy Awards. Picture: Getty

Beyonce attends the 2015 Grammy Awards. Picture: Getty

Kanye West,Kim Kardashian, Beyonce, John Legend and Chrissy Teigen attend the 2015 Grammy Awards. Picture: Getty

Iggy Azalea attends the 2015 GRAMMY Awards. Picture: Getty

Este Haim, Danielle Haim, and Alana Haim of Haim attend the 2015 Grammy Awards. Picture: Getty

Big Sean and Ariana Grande attend the 2015 Grammy Awards. Picture: Getty

Rita Ora attends the 2015 Grammy Awards. Picture: Getty

Courteney Cox and Johnny McDaid attend the 2015 Grammy Awards. Picture: Getty

Madonna performs at the 2015 Grammy Awards. Picture: AP

Madonna performs at the 2015 Grammy Awards. Picture: AFP

Taylor Swift attends the 2015 Grammy Awards. Picture: AFP

Gwen Stefani attends the 2015 Grammy Awards. Picture: Getty

Chrissy Teigen and John Legend attends the 2015 Grammy Awards. Picture: Getty

Kelly Osbourne attends the 2015 Grammy Awards. Picture: Getty

Rihanna and Katy Perry attend the 2015 Grammy Awards. Picture: Getty

Miley Cyrus and Katy Perry attend the 2015 Grammy Awards. Picture: Getty

Giuliana Rancic attends the 2015 Grammy Awards. Picture: AP

Orianthi and Richie Sambora attend the 2015 Grammy Awards. Picture: Getty

Tony Bennett and Lady Gaga perform onstage during the 2015 Grammy Awards. Picture: Getty

Lady Gaga (L) and Tony Bennett, winners of Best Traditional Pop Vocal Album for ‘Cheek to Cheek,’ pose in the press room during the 2015 Grammy Awards. Picture: Getty

Jessie J attends the 2015 Grammy Awards. Picture: Getty

Richard Perry and Jane Fonda attend the 2015 Grammy Awards. Picture: AFP

Host LL Cool J and actress Gwyneth Paltrow introduce Beyonce onstage during the 2015 Grammy Awards. Picture: Getty

Beyonce performs onstage during the 2015 Grammy Awards. Picture: Getty

Beyonce performs at the 2015 Grammy Awards. Picture: Getty

Beck (L) and Chris Martin perform “Heart Is a Drum” onstage during the 2015 Grammy Awards. Picture: Getty

Beck (R) accepts the Album of the Year award for “Morning Phase” from musician Prince onstage during the 2015 Grammy Awards. Picture: Getty

Winner for Album Of The Year Beck reacts as Kanye West appears on stage at the 2015 Grammy Awards. Picture: AFP

Winner for Album Of The Year Beck (L) reacts as Kanye West leaves the stage at the 2015 Grammy Awards. Picture: AFP

Charli XCX attends the 2015 Grammy Awards. Picture: Getty

Jennifer Hudson attends the 2015 Grammy Awards. Picture: Getty

Kanye West and Taylor Swift attend the 2015 Grammy Awards. Picture: Getty

Taylor Swift and Kim Kardashian attend the 2015 Grammy Awards. Picture: Getty

Paul McCartney, Kanye West and Rihanna attend the 2015 Grammy Awards. Picture: Getty

Smokey Robinson, left, presents Beyonce with the award for best R&B performance for “Drunk in Love” at the 2015 Grammy Awards. Picture: AP

Beyonce poses in the press room with the awards for best R&B performance for “Drunk in Love”, best surround sound album for “Beyonce”, and best R&B song for “Drunk in Love” at the 2015 Grammy Awards. Picture: AP

Paul McCartney, Rihanna and Kanye West perform “FourFiveSeconds” onstage during the 2015 Grammy Awards. Picture: Getty

Paul McCartney, Rihanna and Kanye West perform “FourFiveSeconds” onstage during the 2015 Grammy Awards. Picture: Getty

Melissa Rivers and son Cooper Endicott, with the Best Spoken Word Album award for ‘Diary Of A Mad Diva’ won by the late Joan Rivers, pose in the press room during the 2015 Grammy Awards. Picture: Getty

Ciara attends the 2015 Grammy Awards. Picture: Getty

Kim Kardashian, left and Kanye West arrive at the 2015 Grammy Awards. Picture: AP

Gwen Stefani and Adam Levine perform onstage during at the 2015 Grammy Awards. Picture: AFP

Pharell Williams (L) accepts the Best Pop Solo Performance for “Happy (Live)” from singers Tom Jones (C) and Jessie J onstage during the 2015 Grammy Awards. Picture: AFP

Jay Z and Beyonce attend the 2015 Grammy Awards. Picture: Getty

Paris Hilton attends the 2015 Grammy Awards. Picture: Getty

Musician Dave Grohl (L) and Jordyn Blum at the 2015 Grammy Awards. Picture: AFP

Diplo, Madonna and Nas attend the 2015 Grammy Awards. Picture: Getty

Taylor Swift, Jay Z and Kanye West and Kim Kardashian attend the 2015 Grammy Awards. Picture: Getty

Taylor Swift, left, presents Sam Smith with the award for best new artist at the 2015 Grammy Awards. Picture: AP

Ed Sheeran performs at the 2015 Grammy Awards. Picture: AP

Pharrell Williams performs “Happy” onstage during the 2015 Grammy Awards. Picture: AFP

Pharrell Williams and Paul McCartney attend the 2015 Grammy Awards. Picture: Getty

Mary J. Blige, left, and Sam Smith embrace at the 2015 Grammy Awards. Picture: AP

Sam Smith, winner of Record of the Year and Song of the Year for ‘Stay with Me,’ Best Pop Vocal Album for ‘In the Lonely Hour,’ and Best New Artist, poses in the press room during the 2015 Grammy Awards. Picture: Getty

David Burtka (L) and Neil Patrick Harris attend the 2015 Grammy Awards. Picture: Getty

Wiz Khalifa and son Sebastian Taylor Thomaz attend the 2015 Grammy Awards. Picture: Getty

Toni Braxton attends the 2015 Grammy Awards. Picture: Getty

Brian Johnson of AC/DC performs at the 2015 Grammy Awards. Picture: Getty

Angus Young, of AC/DC, performs at the 2015 Grammy Awards. Picture: AP

Hozier and Annie Lennox perform on stage at the 2015 Grammy Awards. Picture: AFP

Annie Lennox attends the 2015 Grammy Awards. Picture: Getty

Usher attends the 2015 Grammy Awards. Picture: AFP

Stevie Wonder left, and Usher perform at the 2015 Grammy Awards. Picture: AP

Tom Jones attends the 2015 Grammy Awards. Picture: Getty

Nick Jonas and Olivia Culpo attends the 2015 Grammy Awards. Picture: Getty

Blake Shelton (L) and Miranda Lambert attend the 2015 Grammy Awards. Picture: Getty

Common (L) and singer John Legend perform “Glory” onstage during the 2015 Grammy Awards. Picture: Getty

Rapper Common (L) and singer John Legend perform “Glory” onstage during the 2015 Grammy Awards. Picture: Getty

Madonna, Annalise Bishop and actor Jamie Foxx attend the 2015 Grammy Awards. Picture: Getty

Singer Lady Gaga attends the 2015 GRAMMY Awards. Picture: Getty

Singer Lady Gaga attends the 2015 GRAMMY Awards. Picture: Getty

Singer Lady Gaga attends the 2015 GRAMMY Awards. Picture: Getty

Singer Lady Gaga attends the 2015 GRAMMY Awards. Picture: Getty