Our favorite fashionistas took a cue from the Spring 2011 runways and dressed to impress -- Studio 54 style! The '70s-inspired jumpsuits -- in bold gold, natch -- were a guiding light in a sea of bland red carpet looks. And this week Stella McCartney's Yves Klein-blue dresses were a celebrity favorite.

JENNIFER lopez iman ellen pompeo gold sequin jumpsuit

Photos: Getty (2) | AP

MIDAS TOUCH:

Jenny from the block made quite an entrance at the release of her new album "Love?" in a gold strapless Zuhair Murad Fall 2011 jumpsuit. Lopez belted the number with a black ribbon and matching Christian Louboutin peep-toe pumps. We love that the diva didn't hold back on the glam factor -- she added gold jewels and voluminous waves.

This "Grey's Anatomy" star ditched the scrubs and opted for something a bit more glam -- Gucci, to be exact -- for Mary J. Blige's benefit Concert in NYC. Ellen Pompeo sported a metallic jumpsuit by the Italian brand which featured a playful, tasseled cord belt. She added Gucci strappy sandals and a matching clutch.

Supermodel Iman had the golden touch at the "Alexander McQueen: Savage Beauty" Costume Institute Gala at The Metropolitan Museum of Art. We love the choice to break up the piece with a strong black belt. However, we're not so sure about the matching locks.

Photos: Getty Images | WireImage (2)

BLUE LAGOON:

Rashida Jones caught our eye in this bright blue Stella McCartney gown at the 2011 White House Correspondents' dinner in Washington, DC. The neckline of her column gown was a perfect way to show off those statement-making earrings. Her signature choppy bangs -- the same haircut she's had since childhood -- looked elegant when paired with kohl-rimmed eyes.

Actress Reese Witherspoon also chose a Stella McCartney-designed, Yves Klein-hued frock for the red carpet. The blonde babe looked sweet at the premiere of her latest flick, "Water for Elephants," in her off-the-shoulder mini dress. Never one to go overboard with accessories, Witherspoon added Christian Louboutin nude heels and Lorraine Schwartz jewels.

Jaws dropped as Eva Mendes walked the red carpet MET Gala in NYC. Her pleated McCartney gown -- which must've been cut from the same batch of fabric as the previous two dresses -- was cinched at the waist by a fabulous gold belt. Her unkempt updo was a perfect choice, along with her golden jewels.

For more celeb copy cats, check out last week's trends.