From the red carpet of the 2012 Academy Awards to the city streets, Hollywood’s hottest stars were dressed to rock and shock this week in the best, worst and wackiest fashions – and RadarOnline.com has all the photos in our daily fashion feature.

Angelina Jolie’s leg was the hottest topic at the Oscars, but Brad Pitt’s parodied baby mama was not our Best Dressed pick of the red carpet. The Help star Jessica Chastain dazzled us with her beauty, looking like she belonged in a museum in her black and bronze Alexander McQueen gown. The

Macaulay Culkin captured the hearts of millions as the cute kid in Home Alone, but the 31-year-old actor is now striking fear into the hearts of his fans with his startling weight loss, and RadarOnline.com has evidence of his horrific transformation.

In images obtained by Entertainment Tonight, Culkin was snapped looking pale and gaunt in New York City on Wednesday when he stopped to sign autographs for fans, while drinking the energy drink Red Bull.

Uh-oh, Coco.

Following in the footsteps of esteemed beauties such as Pamela Anderson and JWOWW, Ice-T’s curvy wife Coco Austin was the latest celebrity to model for wacky designer Richie Rich – but not without a style slip-up!

RadarOnline.com has photos of Coco’s embarrassing New York Fashion Week wardrobe malfunction.

PHOTOS: Coco’s Fashion Week Mishap

The big-bootied bombshell modeled several looks on the runway, but it was a barely there, striped mini dress that got the best of her. During her crawl down the catwalk, the Ice Loves Coco star flashed the entire audience!

The competition was fierce on the red carpet this week, as Hollywood’s hottest stars flocked to swanky events, award shows and premieres wearing the best, worst & wackiest fashions. RadarOnline.com has rounded up all of the wardrobe winners and sinners in the weekly fashion feature you don’t want to miss!

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

It was almost impossible to pick the top look this week, as several sizzling stars were dressed in flawless fashion, but Jennifer Lopez slid into 1st place by a hair! The stunning superstar perfectly showed off her bombshell body at the 11th Annual Latin Grammy Awards in Las Vegas, wearing a magnificent metallic Andrew GN gown.  The sleeved wonder featured a plunging keyhole neckline, which accentuated her sexy top half, and was constructed out of body skimming material, which made the most of her covetable curves.

PHOTOS: Bikini Wars! Sexy Songbirds Battle It Out On The Beach

Cher has made it quite clear that she wishes she could Turn Back Time, but she needs to grasp the painful truth: she can’t!  The iconic singer, who is set to hit the big screen this month in Burlesque, has been busy promoting her flick all over the country, wearing faux pas fashions from the 1980’s and 90’s.  From her Late Show look of cutout leggings over fishnet tights paired with a belted sheer shirt---to her Glamour Women of the Year Awards Elvira ensemble---the Academy Award-winning “Goddess of Pop” was the Worst Dressed star of the week!

PHOTOS: The Best, Worst & Wackiest Fashions At The CMA Awards

Style was not compromised at the 44th CMA Awards on Wednesday, as country music’s hottest crooners and big screen babes got all done up for the Nashville event. While Taylor Swift opted for a red hot Monique Lhuillier gown (see her here!) which featured a dangerously high slit, Gwyneth Paltrow showed some skin in a crafty cutout Atelier Versace one-shouldered number. And Nicole Kidman stood by her man, Keith Urban, thinking outside of the box by pairing her amazing Dolce & Gabbana white lace cocktail dress with cutout heels.

PHOTOS: Bikini Wars! Sexy Stars Who Have Shared Lovers

At the World Premiere of Harry Potter and the Deathly Hallows: Part 1, Emma Watson dazzled in an uber-short Rafael Lopez lace and feathered frock, which she finished off with towering Charlotte Olympia pumps, while Gossip Girl Clemence Poesy looked like she was headed to a 1970’s prom in a poof-shouldered lace Chanel frock. And of course, Helena Bonham Carter brought the wacky factor to the red carpet, wearing a bizarrely constructed dress with a horrible hairdo.

PHOTOS: The Best Bootys On The Beach

Fergie celebrated her Glamour Woman of the Year title at the magazine’s bash in NYC, wearing a curve-skimming Zac Posen gown in flawless fashion, where Kate Hudson was also dressed to impress in a side slit Lanvin gown and Brian Atwood heels.

PHOTOS: Bikinis! The Most Ab Fab Stars In Hollywood

See all the highs and lows on the fashion front this week in RadarOnline.com’s weekly feature!

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It was a dazzling day of fashion as stars hit the red carpet around the world, wearing smashing fashions hot off the runway.  Of course, there are always some dressing disasters when it comes to our famous friends. RadarOnline.com has all the photos in our daily fashion feature!

PHOTOS: The Best And Worst Dressed Stars Of The Day

Elizabeth Banks was dressed to thrill at the NYC premiere of her latest flick The Next Three Days. Ditching the prison jumpsuit she sports in most of the film, the blonde babe was in bombshell style, hitting the red carpet in sexy-to-the-max cutout cocktail dress from the Versace Spring 2011 collection.  Olivia Wilde joined her costar on the carpet in a simply sophisticated Celine sleeved number, which she paired with Christian Louboutin pumps, a Jimmy Choo clutch and Stephen Russell jewels.

From the swanky red carpets in NYC, Los Angeles and Miami to the streets of London, stars were dressed in the best and worst fashions on Thursday and RadarOnline.com has all the sizzling pics!

PHOTOS: Stars In The Best And Worst

Anne Hathaway hit the Opening Night Gala of the AFI Fest 2010 premiere of her latest flick Love and Other Drugs, dressed to impress in leading lady style. The brunette babe rocked a figure-flattering Antonio Berardi dress, which featured short sleeves and chic side panels, with nude Sergio Rossi peep-toes.