Grammy Awards 2015: Madonna Exposes Butt; Kim Kardashian, Rihanna and Other Best and Worst Dressed Celebs [PHOTOS]

Grammy Awards 2015 was a star-studded event held at the Staples Center in Los Angeles, California on 8 February. 

The show hosted by rapper LL Cool J, saw the presence of many celebs, including Sam Smith, Pharrell Williams, Beyonce, Rihanna, Madonna, Kim Kardashian, Lady Gaga, Katy Perry, Jenny Lewis, Arianda Grande, Taylor Swift, Joy Villa, Kat Graham, Kelly Osbourne, Jessie Jane Fonda, Paris Hilton and John Legend, among others.

While many celebs wore outlandish outfits to the Grammy's this year, Madonna's 'bare your bum' act clearly took the cake. In a shocking swift move, the 56-year-old singer scrunched her black Givenchy dress, paired with Wolford fishnet stockings and a hat, and flashed her butt for the cameras.

CHIC #MadonnaAtTheGrammys pic.twitter.com/1BcNu5pqBD

— stephanie cabre (@s_cabre) February 9, 2015

On the one hand Madonna dared to expose her 'asset', while on the other, Sia and Rihanna were found covered up in wigs and a whole lot of fabric.

Grande's white and silver Versace gown made her look gorgeous, but not-so-popular singer Villa shocked many by exposing almost everything in her recycled plastic dress by Andre Soriano.

Compared to her previous red carpet appearances, Gaga appeared in a simple shimmery silver Brandon Maxwell dress, while Kardashian wore a shimmery Jean Paul Gautlier dress showing off her famous cleavage.

Purple appeared to be the hot favourite colour during the event as Perry and Osbourne were seen flaunting the shade with the Zuhair Murad dress and polka dot attire, respectively.