The red carpet at the 2014 Billboard Music Awards is officially underway, and we're more than a little excited to see all the stars hit the red carpet at the MGM Grand in Las Vegas. Ludacris is hosting the ceremony this year, and practically everyone who is anyone in music right now is expected to perform, from J.Lo to Lorde. Jordin Sparks and Kesha have already made appearances, and we're expecting many more celebs to show. Click through the gallery to see all the arrivals at the 2014 Billboard Music Awards.