Some big stars hit the red carpet for the 40th Annual American Music Awards on Sunday night.

Nicki Minaj brought back big hair, Taylor Swift sported a super short dress and a very tan Christina Aguilera showed off a much shorter 'do at the Nokia Theater.

And they weren't the only hot blondes on the carpet.

Ke$ha got another glam makeover, Carrie Underwood looked gorgeous in a purple gown and Gwen Stefani showed some belly while posing with No Doubt.

Plus, Jenny McCarthy showed off a bold new look -- sporting an updo very reminiscent of P!nk or Miley Cyrus. What do you think of her hair? Sound off below!

The Backstreet Boys and The Wanted looked sharp in some swanky suits, Heidi Klum kept it simple in a very short lace dress and "Once Upon a Time" star Jennifer Morrison showed some skin with a low-cut dress that also revealed a lot of leg.

We'll keep updating the gallery as new pics come in. Check 'em all out above!

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