Is it really fair to judge other people's fashion choices, when you're dressed in that ensemble, Kelly O?

The host of E!'s Fashion Police, who named Charlize Theron as Best Dressed tonight, donned a blue Zac Posen gown with funky puffed sleeves, paired with a Judith Leiber bag, and Vhernier jewelry, on Sunday night. It's time to get rid of the grey hair, Kel!

Osbourne made sure to Tweet her mom before leaving for the show, "@MrsSOsbourne mum I'm stealing your shoes from tonight just thought I would let you know! #eredcarpet."

Who's going to call the Fashion Police on Kelly?

Reese Witherspoon is a living Red Carpet Barbie doll!

The Oscar winner looked stunning in a floor-length Zac Posen peony taffeta bustier gown, Fred Leighton jewels and Christian Louboutin heels at tonight's Golden Globes, while keeping her hair casual in lose beachy waves.

Fashion Police host Kelly Osbourne, who also donned a gown from the designer, couldn't help but Tweet, "Reese in @Zac_Posen is just breath taking!," after seeing the Water for Elephants star's gown.

Reese always gets it right!

Piper Perabo isn't nominated this year, but she made sure to capture some major attention in this see-thru ensemble anyway!

The Coyote Ugly star wowed the crowd when she stepped out in a sheer gray-lavender gown from the Theyskens' Theory Spring 2012 collection that appeared to be transparent, paired with Tiffany & Co. diamonds and Christian Louboutin disco-ball heels.

What do you think of Piper's peek-a-boo look?

Nicole Richie looked understated and chic in a simple silver Julien Macdonald gown that showed off her new curves in all the right places at the 69th annual Golden Globe Awards on Sunday night.

The 30-year-old fashion designer, who isn't up for any awards tonight, accessorized her gown with a matching pair of Jimmy Choo shoes, and a House of Harlow clutch from her new line.

Nicole is gearing up to return to reality TV with NBC's upcoming competition show, Fashion Star.

Va va voom!

Never one to miss an opportunity to show off her famous curves, Sofia Vergara looked ravishing in a custom Vera Wang peacock strapless mermaid gown, paired with Harry Winston jewels, at the 69th annual Golden Globe Awards in Beverly Hills on Sunday night.

The 39-year-old stunner is nominated for Best Supporting Actress in a TV series for her role as high-maintenance housewife Gloria in ABC's Modern Family, and she's definitely dressed to win!

Charlize Theron took the opportunity to show off her lovely legs in a frilly peach Christian Dior number, paired with Cartier jewelry and Givenchy shoes, at the 2012 Golden Globe Awards in Beverly Hills on Sunday evening.

We're happy the Oscar-winning actress made an appearance at the show, despite the fact that she's been feeling a bit under the weather lately. "I have a bit of laryngitis, but I figured I'd use this voice to accompany the dress," Theron confessed on the red carpet.

Charlize is nominated for Best Performance by an Actress in a Motion Picture (Comedy or Musical) for her role in Young Adult. The blonde beauty won a Best Actress nod in 2004 for her role in Monster.

Channeling Audrey Hepburn in a 60's-inspired fuchsia gown paired with Harry Winston jewels, Natalie Portman looked ravishing on the red carpet at the 69th annual Golden Globe Awards at the Beverly Hilton Hotel on Sunday evening.

Fiance Benjamin Millepied joined the Oscar-winning actress in her first red carpet appearance since giving birth to son, Aleph, in July.

The actress has the important task of announcing one of the night's winners, after collecting a Best Actress award last year for her provocative role in the ballerina drama, Black Swan.

See the winners as they speak to the press backstage the 2012 Golden Globes.