The award ceremony had a major tun out and The Weeknd and Adele were big winners for the night, winning eight and five awards respectively. Britney Spears received the Billboard Millennium Award. Celine Dion took home the Billboard Icon Award in recognition of her career spanning over three decades.
Madonna made an appearance to pay tribute to Prince. Other celebrities paid homage to Prince wearing purple – Kesha, Keke Palmer and Meghan Trainor.
We check out some of the best looks from the red carpet below;