Make sure your tuned into the Billboard Music Awards this Sunday, May 20th @ 8/7c on ABC and Live from the MGM Grand Arena hosted by Modern Family co-stars Julie Bowen and Ty Burrell. Katy Perry (premiering her new song), Chris Brown, Justin Bieber, Carrie Underwood, LMFAO, CeeLo Green, Kelly Clarkson, Usher, The Wanted  Linkin Park and Nelly Furtado are all schedule to perform.

Jordin Sparks and John Legend are schedule to honor the late Whitney Houston in a tribune to her at the Billboard Music Awards. Houston's daughter, Bobbi Kristina, and sister-in-law, Pat Houston, will make a special appearance to accept the award in her honor.

Adele, LMFAO, Rihanna, Lady Gagaand Lil Wayne are the leading finalists. Adele takes the lead as a finalist in 18 award categories, while LMFAO is a finalist in 17 categories. Rihanna lands in 13 categories this year, after leading the pack with 18 category appearances in 2011. Lady Gaga and Lil Wayne each snagged a spot in 10 categories.

For more information on performers, Award Finalist, and more. You can visit Billboard's website: http://www.billboard.com/bbma/