From the red carpet to the streets, stars were dressed to rock and shock on Tuesday and RadarOnline.com has all the photos.

PHOTOS: Stars In The Best & Worst Fashions Of The Day

Rachel McAdams returned from the Cannes Film Festival, but refused to leave sexy style on the French Riviera. The Midnight in Paris brought out the bombshell for the NYC screening of the Woody Allen film, looking tres Marilyn Monroe in a super slitty Louis Vuitton gown.

Bigscreen bombshells faced off on the fashion front Tuesday, hitting the red carpet across the world in the best and worst duds and RadarOnline.com has all the photos in our daily feature. To find out who we honored - and shunned - click on the next sentence.

Click Here To See Stars In The Best And Worst Fashions

Gwyneth Paltrow was definitely Country Strong at the Los Angeles premiere of her latest flick, defining the term 'white hot.' Flawlessly faced with her hair stick straight and glossy, the beautiful blonde showed off her toned and taut bod in curve-hugging Emilio Pucci gown, which featured cutout sides and cutout back. Her much younger Gossip Girl costar Leighton Meester also look fab fab fab, opting for a frilly and fem Christian Dior frock, which she paired with brightly hued wedge sandals.

The red carpet was on fire this weekend, as stars sizzled and fizzled in the best, worst and wackiest fashions.  RadarOnline.com has all the photos in our weekly feature!

PHOTOS: The Best, Worst & Wackiest Fashions Of The Weekend

Metallic a la mode was all over the place!

Olivia Wilde dominated the Los Angeles premiere of Tron: Legacy in a body skimming Emilio Pucci gown, which featured a sexy keyhole top.  The House star belted the floorlength stunner, accentuating her tiny waist.  It doesn’t get much sexier than this!

PHOTOS: Stars Hit The Hollywood Style Awards

Jennifer Lopez has been rocking smashing fashion as of late, so what happened to the American Idol judge over the weekend in Sin City?  J. Lo sported a not-so-chic metallic and black jumpsuit, which she took from bad to worse, by adding matchy-matchy metallic booties.

PHOTOS: The Best, Worst & Wackiest Fashions Of The Week

Elle Fanning continued to reign as the most fashion forward 12-year-old in the world!  Dakota’s little sis hit a NYC screening of Somewhere wearing a head to toe look hot off the runway of the Rodarte Spring 2011 collection.

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Rachel Bilson looked fem and fab in Christian Dior, Celebrating the Target and William Rast collaboration in Los Angeles, where Anna Faris looked sexy and stylish in a black strapless mini and patent platforms.

PHOTOS: Bikinis! Hollywood’s Sexiest Singles Strip Down

Other notable nods included Christina Ricci, looking svelte and stylish in Zac Posen at the 2010 New York Stage and Film Gala Honors in NYC, and Amy Adams, showing off her post-preggers bod in Roland Mouret at an NYC screening of The Fighter.

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And though we love Kim Kardashian’s crazy curves, the reality show star looked a little too boobiful at the opening of Beauty & Essex restaurant in NYC.

See more style highs and lows on RadarOnline.com.

From Twilight’s hottest vamps and werewolves to the sexiest leading ladies in Hollywood, stars hit the black carpet of the GQ Men of the Year Awards on Wednesday night, to celebrate the men and woman (Scarlett Johansson was named Babe of the Year!) who made a splash in 2010.

PHOTOS: Stars Hit The 2010 GQ Men Of The Year Awards

Who were the absolute style stars of the swanky event?