Kim Kardashian Covers Up Curves in Demure Party Dress

Credit: Jon Kopaloff/FilmMagic

After last week's embarrassing flour-bombing scandal, Kim Kardashian returned to the spotlight looking unusually understated Tuesday.

Instead of her usual skin-tight looks and flashy jewels, the reality star, 31, chose a feminine black and white patterned Lela Rose dress with a flare skirt and sheer illusion neckline for the Valentino 50th anniversary party and new flagship store opening in Beverly Hills, Calif. March 27.

She also kept her accessories to a minimum -- classic black pumps with a matching clutch -- and wore her hair in a simple ponytail.

Another noticeable change in the 5-foot-2 star’s appearance: her recent 6-pound weight loss. "I'm on a mission," she tells Us Weekly. "I figure, I'm single. Now is the best time to get in shape."

Last weekend Kardashian showed off her hard work (she's been exercising twice a day and sticking to a strict diet) in a sexy curve-hugging dress.