The 2013 Billboard Music Awards are rolling into Las Vegas on Sunday. It's shaping up to be a great show, with Taylor Swift , Justin Bieber, Jennifer Lopez , and Lil Wayne scheduled to perform, while Madonna  will be honored with the Top Touring Artist award. Before we check out all the action this weekend, though, we're taking a look back at the Billboard fun in years past. Remember when Jessica Simpson  and Nick Lachey  took the stage together in 2003 or when Britney Spears  heated things up with Rihanna  in 2011? Click through to see all the photos, and check back later for coverage from the show!
Katy Perry  brought her grandmother as her date to the May 2012 Billboard Music Awards.
Usher  showed off his artist of the year Billboard award next to Cher in December 1998.
Julianne Hugh congratulated Justin Bieber in May at the 2012 Billboard Music Awards.
Jessica Simpson  and Nick Lachey  presented the digital track of the year award on stage during the 2003 fun in December.
The Backstreet Boys were the center of attention backstage at the December 1998 show.
Jennifer Lopez  and Marc Anthony  walked the carpet together in December 2005.
In December 2003, Nicole Richie  and Paris Hilton  took the stage.
Justin Timberlake  greeted fans during the 2001 show in December.
Jermaine Dupri and Janet Jackson  got close on the Billboard red carpet in December 2006.
Britney Spears  and Rihanna  performed together in May 2011.
Taylor Swift  hugged Zooey Deschanel  after receiving her Billboard Music Award in May 2012.
Matthew McConaughey  presented John Mellencamp with the 2001 century award at the December show.
Musical couple Gwen Stefani  and Gavin Rossdale  posed for the cameras in December 2006.
Christina Aguilera  hit the stage during the 2000 show, back when it was held in December.
Carrie Underwood  and her husband, Mike Fisher, were on hand for the 2012 Billboard Music Awards in May.
Ricky Martin got excited with his Billboard statues backstage in December 1999.
Mariah Carey  and Stevie Wonder posed for a pic at the December 1998 Billboard Music Awards.
Destiny's Child performed at the December 2004 event.
Carly Rae Jepsen performed her hit song "Call Me Maybe" at the May 2012 Billboard Music Awards.
The O.C. cast took the stage at the December 2003 Billboard Music Awards.
Miley Cyrus  wore nothing but a white blazer to the May 2012 Billboard Music Awards.
Celine Dion , Bono , and Shania Twain got together for a backstage photo op in December 2003.
The cast of High School Musical won the award for the best soundtrack album in December 2006.
Gwen Stefani  showed off her stomach during a December 2001 performance.
Pink rocked the microphone at the Billboard Music Awards in December 2001.
Britney Spears  and Kanye West  buddied up at the Billboard Music Awards in December 2004.
Beyoncé was surrounded by look-alikes at a December 2003 Billboard Music Awards performance.
Kristen Bell  presented the rock single award with Def Leppard in December 2006.
Nicole Kidman  and Selena Gomez  met up on the Billboard Music Awards red carpet in December 2011.
'NSYNC sat down for a special Billboard Music Awards show in December 2001.
Shakira  and Wyclef Jean shared the stage in December 2006.
Justin Bieber and Usher  had a bonding moment at the Billboard Music Awards in May 2012.
In December 1999, Jay-Z  picked up a Billboard Music Award.
Mandy Moore  went with a bright plaid look for the December 1999 Billboard Music Awards.
Alicia Keys  got excited about the seven awards she picked up in December 2004.
Chrissy Teigen cuddled up to John Legend  in May 2012 at the Billboard Music Awards.
Beyoncé Knowles commanded the stage with dancers at the Billboard Music Awards in May 2011.
Usher  got sexy on stage in December 2004 for the Billboard Music Awards.
Nick Lachey  signed autographs for fans at the December 2004 show.
Whitney Houston and Bobby Brown snuggled up backstage in December 1993 for the Billboard Music Awards.
Carrie Underwood  balanced multiple Billboard awards after the December 2006 event.
Taylor Swift , Justin Bieber, and Selena Gomez  made a picture-perfect group in December 2011.
In December 2005, Ashlee Simpson  performed with Pretty Ricky at the Billboard Music Awards.
Lance Bass had Lea Michele  on his arm at the Billboard Music Awards in December 2010.
The Black Eyed Peas rocked the Billboard Music Awards stage in May 2011.
Keith Urban , Sheryl Crow , and Lance Armstrong  hung out at the December 2004 Billboard Music Awards.
Natasha Bedingfield performed at the May 2012 Billboard Music Awards.
Katy Perry  performed at the May 2012 Billboard Music Awards.