The biggest stars in music hit Las Vegas on Sunday evening for the Billboard Music Awards, and social media blew up during and after the show with celebs tweeting and Instagramming photos from the event.

Now that all the performances have been seen and big winners have been announced, we've rounded up the best celebrity social media pictures from the BBMAs for this week's Trending Tuesday.

Anchorman 2 Cameos: The List Grows [Celebuzz]

Carly Rae Jepsen Debuts Her New Red ‘Do [Teen]

Hilary Duff: “I Love Being a Mom” [CelebrityBabyScoop]

See Demi Lovato’s Sexy Poses in Demi CD Booklet [Popcrush]

Neil Patrick Harris to Host Tony Awards Again [TheCelebrityCafe]

Selena Gomez Reveals New Album Title [Wetpaint]

One of the many great things about social media is that celebrities can give us a behind-the-scenes look into their lives. While sometimes this means we get a peek into their private and personal affairs, most of the time the stars use the opportunity to share what they're working on.

For this week's Trending Tuesday, we've rounded up a bunch of celeb photos to get a better idea of what goes on during a Hollywood work day!