Beyonce Knowles and Jay-Z triumph at BET Awards
Beyonce Knowles, Jay-Z and Kanye West all won top honours at the Black Entertainment Television (BET) Awards.
Beyonce was named Best Female R&B artist, while Chris took home the parallel award for Best Male. Jay-Z and Kanye West's Watch the Throne project was named Best Group.
Elsewhere, Nicki Minaj was named Best Female Hip-Hop Artist for the third year running.
Accepting her award, she said: "I really, really appreciate BET for keeping this category alive, and I appreciate all the female rappers doing their thing, past, present and future."
The awards, held at Los Angeles' Shrine Auditorium, also featured a series of emotional tributes to Whitney Houston - who was found dead in her hotel room in February - led by Mariah Carey.
She said: "I miss my friend. I miss hearing her voice and laughter, but we'll always have the music. We'll always have that voice we fell in love with, she inspired us all, we'll always have my friend Whitney Houston."
Singer Monica performed Whitney's I Love The Lord, followed by Brandy who sung I'm Your Baby Tonight followed by I Wanna Dance With Somebody.
Whitney's brother Gary then sang Where You Are, followed by her mother Cissy, who performed Bridge Over Troubled Water, which received a standing ovation.
Tributes were also paid to the late Donna Summer, Dick Clark and Don Cornelius at the awards.
BET Awards 2012, full list of winners:
Best Group: Kanye West and Jay-Z
Best Actor: Kevin Hart
Best New Artist: Big Sean
Best Male R&B artist: Chris Brown
Best Collaboration: Wale featuring Miguel Lotus Flower Bomb
Best Gospel: Yolanda Adams
Best Female R&B Artist: Beyonce
Best Female Hip-Hop Artist: Nicki Minaj
Video of the Year: Jay-Z and Kanye West, Otis
Lifetime Achievement: Frankie Beverly featuring Maze
Humanitarian Award: Rev. Al Sharpton
Viewer's Choice Award: Mindless Behavior
Video Director of the Year: Beyonce and Alan Ferguson
Fandemonium Award: Chris Brown
Centric Award: Common
Sportswoman of the Year: Serena Williams
Sportsman of the Year: Kevin Durant