MTV Movie Awards 2010: Hot or Not?

<b>Hot!</b> Scarlett Johansson looked fresh and pretty in form-fitting green lace.  (Reuters)

<b>Hot!</b> Jessica is cute as a button in black and white, and the pink bow is the perfect finishing touch.  (Reuters)

<b>Not!</b> Yikes. What pinata exploded and left Katy covered in candy?  (Reuters)

<b>Hot!</b> Vanessa might just fly into the sunset in this angelic, ethereal creation.  (Reuters)

<b>Not!</b> Between the awkwardly bandaged top and the choppy, feathery mess of a skirt, there is nothing fabulous about Christina Aguilera's ensemble. (Hope these words don't bring her down!) (Reuters)

<b>Hot!</b> Miranda looks pretty enough to eat in candy-apple red.  (Reuters)

<b>Hot!</b> Amber could have just arrived from Mount Olympus in her Grecian-inspired tunic.  (Reuters)

<b>Not!</b> Lindsay's space-age pantsuit looks, well, about as good as that sounds.  (Reuters)

<b>Hot!</b> Samantha keeps it classy with a simple cocktail dress in a fabulous color.  (Reuters)

<b>Hot!</b> Anna's colorful dress flatters her figure, and she works the gladiator sandal trend well.  (Reuters)

<b>Not!</b> The severe ponytail and stark, dark outfit do nothing for Kristen's looks.  (Reuters)

<b>Hot!</b> It's a fine line, but 'The Hills' star makes this shimmery shift work.  (Reuters)

<b>Hot!</b> You can't go wrong with a classy Little Black Dress like Julianne's.  (Reuters)

<b>Not!</b> Eva's got a great figure, but you'd never know it in this shapeless snakeskin-patterned frock.  (Reuters)

Hot! Stephanie is pretty as a crimson sky in her butterfly-patterned dress.  (Reuters)

<b>Hot!</b> Paris' pretty, piquant little dress shows off her gorgeous tan.  (Reuters)