Hot...And Not...In The Best & Worst

From the sizzling hot red carpet of the Maxim Hot 100 Party in Los Angeles to the swanky New York City Ballet Spring Gala in NYC, Hollywood’s most talked-about style stars were dressed to rock and shock and RadarOnline.com has the photos.

Supermodel-turned-Transformer Rosie Huntington-Whiteley was honored at Maxim’s annual bash for being the hottest celebrity of the year.  The bombshell blonde did not disappoint on the red carpet, rocking a white-hot Max Mara cutout dress, which clung to her fat-free figure in the sexiest way possible, with Sergio Rossi heels and a leopard print clutch.

Britney Spears made a rare red carpet appearance, hosting An Evening of Southern Style with her family in Los Angeles but the stage beauty missed the a la mode mark. Brit wore a lime green Herve Leger by Max Azria number, which wasn’t such a hot hue for her skintone, with too-clunky heels.

Steven Tyler upped the wacky factor, because let’s face it, Dude alwaysLooks Like a Lady!

Other style scores included Sarah Jessica Parker in Valentino and Mandy Moore in Jenny Packham, while fashion flops were experienced by 90210 babe Jessica Lowndes and the bootylicious Amber Rose.