Rihanna and a black-masked Britney Spears opened the Billboard Music Awards with a bang!

The sexy singers donned bondage gear as they preformed Riri's hit song, S&M, and Miss Fenty even stole a peck from Miss Spears. Think Madonna's jealous?

Some of the night's top winners include Taylor Swift, who was named 200 Album Artist of the Year – for Speak Now, and Justin Bieber, who won six awards including: Digital Artist of the Year, Top New Artist and Fan Favorite (he gave GF Selena Gomez a big kiss after winning!).

Eminem also took home six trophies including: Top Artist, Top Male Artist, and Top Billboard 200 Album. Rihanna was named Radio Artist of the Year and Female Artist of the Year.

Beyonce was honored with the Billboard Millennium Award and a video montage with relatives, friends and collaborators, including First Lady Michelle Obama, Lady Gaga, The-Dream, U2's Bono, Babyface, Stevie Wonder, Solange and little Juelz, Barbara Streisand, and mother and father Matthew and Tina Knowles all sent the singer a special congrats on her success.