The biggest stars graced the American Music Awards 2013 red carpet. As always, there were those who stood out with their great fashion sense while there were some who still looked a bit off-key.

Let's have a quick peek at some of the thoughts of various online sites who had their own fashion experts judge the best and worst dressed at the show:

American Music Awards 2013 Best Dressed

For Take40, it was Bonnie McKee who served as a fashion darling on the red carpet. For those who do not know, she is the writer behind the hit songs of Britney Spears and Katy Perry. She also hosted the actual red carpet coverage of the event. For the guys, they admitted the stance of Austin Mahone.

Hollywood Life praised Roar singer Katy Perry for wearing an Oscar de la Renta gown set in strapless design. Taylor Swift was added to their own best dressed list as she wore a Julien MacDonald mini with a short hemline that made her look truly sensational. The site added that Ariana Grande also did shine out by sporting a sexy Dolce & Gabbana in red sequin gown. Other stars that they considered sparkling for the night are Jordin Sparks and Brandi Cyrus.

American Music Awards 2013 Worst Dressed

Celebuzz.com emphasized how they still love Kelly Osbourne but not the dress she wore for the night. Their fashion critics did not so much love too Zendaya's looks with a Donna Karan dress just because of the presence of the pants. Other stars that landed on the site's worst dressed list include Sarah Silverman and Zoe Saldana.

Eonline added that even the most fabulous names like Ciara and Heidi Klum were not able to pull off the sheer dresses they wore while Emma Roberts mistakenly showed off a large dress that did not show off her good figure.

Watch the video below to see some of the stars who graced the American Music Awards 2013 red carpet: