Hailey shined on the red carpet in a gold sequined jumpsuit.
DJ and producer Zedd kept it casual in a black suit for the star-studded event.
Jenna Dewan Tatum looked stunning in a black and red patterned dress and a sequined matching jacket.
Isla Fisher wore a short, tight black dress on the red carpet that showed off her amazing figure.
Halsey and boyfriend G-Eazy walked hand and hand on the carpet, the "Bad At Love" singer leaving little to imagination in a tiger-like striped skirt and crop top that showed off her midriff. Meanwhile, her beau kept it casual in a black suit with a gold jacket.
Iggy Azalea stunned in a classy, long black dress with a slit on the side that showed off her long legs.
Charlie Puth looked stylish in grey pants, a white shirt and an orange patterned sports jacket.
Camila Cabello, who performed her hit song "Havana" during the show, rocked the red carpet in a black and red sexy, patterned dress.
Paris Hilton was red hot in a cute, lacy dress that she paired with fiery heels.
As for the worst dressed, the award goes to Drake Bell, who wore a silly, bright green sweater and floral green pants. Talk about clashing!
Ashley Greene looked beautiful in a classy, black and gold dress. Which outfit of the night was your favorite? Let us know in the comment section.