ONE News Now has wrapped up its coverage of the Billboard Music Awards in Las Vegas.
3.05pm: Adele has scooped up the biggest award of the night for BMA's top artist.
2.15pm: Canadian singer Celine Dion has accepted the Billboard Icon Award, with an emotional acceptance speech.
After blowing away the audience with one of her songs, her son Rene Charles Jnr walked out onto the stage to present the award to his mother.
In her speech she paid homage to her family, after the death of her husband Rene Angelil in January.
"I want to be so strong for my family and my kids... you make me so happy," she said.
2.05pm: Rihanna is getting praise left, right and centre for her impressive vocal performance.
2pm: Bit of a big night for The Weeknd, who has just picked up another gong for top R&B song for The Hills.
1.45pm: Adele has won a coveted award at the BMAs, picking up the Top 200 Billboard Award for her record-smasher album, 25.
Adele is not at the event today. Instead, she made her acceptance speech through a small video played at the event. She's on her world tour at the moment.
1.30pm: Demi Lovato performs show-stopping version of her hit Cool for the Summer.
12.50pm: Moving to country music, Thomas Rhett is awarded Top Country Song for Die a Happy Man.
12.40pm: Wiz Khalifa wins the Top Hot 100 Song for See You Again.
12.20pm: The Weeknd picks up the Top Hot 100 Artist award and pays tribute to "the late great" Prince, who died last month.
12:10pm: Britney Spears, dressed in red performs I'm a Slave 4 U to open the Billboard Music Awards.
The Billboard Music Awards will feature a mix of emotional and explosive performances.
Madonna will pay tribute to Prince, who died last month; Kesha will now sing live after her performance was initially cancelled by her former mentor; and Celine Dion — who recently lost her husband and brother — will perform Queen's "The Show Must Go On."
The show, airing live on ABC from the T-Mobile Arena in Las Vegas, will open with a seven-minute medley from Britney Spears, and other high energy performances from Justin Bieber, Pink and Rihanna will take place during the three-hour event.
"It's going to be a big, huge show and it's got something in there for everybody," executive producer Mark Bracco said.
"It's going to have a lot of fun, but it's going to have a lot of emotion and heart this year."
Madonna was met with criticism online after Billboard and Dick Clark productions announced she would pay homage to Prince, who died on April 21 at age 57.
The icons collaborated on "Love Song" in 1989.
Kesha was also in the heat of drama after Dr. Luke rescinded his decision to let her perform at the show.
The hitmaking producer and his record label reversed the decision after Kesha said she would not use the stage to discuss their ongoing lawsuit.
Kesha will sing a cover of Bob Dylan's It Ain't Me Babe.
Other performers include Blake Shelton, Gwen Stefani, Ariana Grande, Meghan Trainor, the Go-Go's, Nick Jonas, Demi Lovato, Tove Lo, Troye Sivan and Lukas Graham.
The Weeknd, who is attending the show, is the top nominee.
He's nominated for the night's big prize — top artist — and his competition includes Adele, Taylor Swift, Bieber and Drake.
Swift and Adele — who is premiering her new music video for Send My Love (To Your New Lover) at the awards show — won't attend. It was unclear if Drake would attend.
Adele, Swift, Bieber and the Weeknd are also nominated for top Billboard 200 album, along with Ed Sheeran's x.
The Weeknd is a double nominee for top 100 song with Can't Feel My Face and The Hills.
His competition includes Adele's Hello, Fetty Wap's Trap Queen and Wiz Khalifa and Charlie Puth's See You Again.
Ciara and Ludacris will host the 2016 Billboard Music Awards.