Talk about a body that can stop traffic.

Kim Kardashian flaunts - and loves to talk about - her bootylicious curves at every conceivable opportunity, but Beyonce gives her a run for her money. And is fairly successful and both acting and singing, unlike K-squared.

Case in point? Here's Beyonce looking absolutely f-i-n-e in a tight black dress at last night's premiere of her new movie, Obsessed ...

It's been quite a week for B, who was alleged to suck at singing when a clip surfaced of her screeching voice. Howard Stern even promoted the thing, which turned out to be a big hoax. She's no Jessica Simpson, in other words!

Click to enlarge more Beyonce pics from last night's premiere ...