Find Style: 2015 Billboard Music Awards: Red Carpet and Show Highlights

The saying goes: "What happens in Vegas, stays in Vegas." Clearly that wasn't the case this time. Just two days ago, the twenty-third Billboard Music Awards took place at the MGM Grand Garden Arena in Las Vegas, and the stars had nothing to hide. From designer collaboration spoilers to the world premiere of a highly anticipated music video, the surprises kept coming. Here are a few highlights from the awards show:

Chrissy Teigen accompanied Ludacris this year as a co-host. Between frequent wardrobe changes to John Legend jokes, Teigen kept the crowd at the edge of their seats. This loose cannon had no filter whatsoever.

Olivier Rousteing (alongside best friends Jourdan Dunn and Kendall Jenner) revealed his upcoming collaboration with H&M. Soon we'll all be able to join the Balmain army! #HMBalmaination

Taylor Swift debuted her new music video for Bad Blood (remix featuring Kendrick Lamar) which features just about every young Hollywood starlet you could think of. Zendaya, Gigi Hadid, Karlie Kloss, Hayley Williams (Paramore), Serayah (Empire), and Selena Gomez were just a few of the stars in the video. If that wasn't enough, Taylor Swift had a small girl army accompany her as her dates to the BBMAs, and also new boyfriend Calvin Harris whom she hugged each time she won an award (eight to be exact).

Chris Brown surprised us all with the prettiest date of the night, his daughter Royalty. Brown also had an fiery performance with Mr. 305 himself, Pitbull, singing his new single, "Fun", and showed the world his salsa moves.

Sam Smith, unable to make the awards show due to vocal surgery, sent the sweetest message via video to all of his fans, and promised to come back stronger than ever!