Some of the biggest stars in music, including Taylor Swift, Miley Cyrus and Katy Perry attended the Billboard Music Awards tonight in Vegas. 

While some rocked it with their gorgeous gowns/outfits, others - not so much.

My best-dressed of the night were:

Taylor Swift - she looked gorgeous as usual! No one can rock gowns better than she can!

Julianne Hough - I was a little on the fence on this one. I know at first it looks like a towel and simple. But it makes her sparkle and it's very chic! I like it.

Jordin Sparks - This nude color stands out great against her beautiful skin tone! You go Sparks.

And now, my worst-dressed of the night:

Miley Cyrus - I usually love what she wears to red carpets, but this time...was a big NO-NO. I know Rihanna rocked just a blazer about a month ago, and I guess that's where she got the inspiration, but please stick to wearing bras Miley. Oh and wear something that shows off your figure, would ya!?

Check out the gallery to see the red carpet arrivals! Who made your best and worst dressed list?