Who wore it best: Rihanna vs. Paris Hilton

Rihanna and Paris Hilton get matching in Alexander Wang

As one of the fashion world's most coveted rising style stars, it should be no surprise that Alexander Wang's corset dresses has been spotted on not one, but two Hollywood starlets in the space of a week.

Giving the dress its A-list debut, Rihanna stepped out in the two-tone number last week, and was papped leaving Kanye West's Manhattan apartment.

Jil Sander platform heels and an oversized metallic bag completed her look.

Less than a week later, and Paris Hilton gave the dress another very public outing. Arriving for an appearance on the Late Show with David Letterman, the socialite rocked the style with YSL pumps.

She added a resin necklace, from the House of Harlow collection by her ex-Simple Life co-star, Nicole Richie.

Both stylistas opted for very similar make-up to compliment their statement frocks - matching pale pink lips and a slick of black liner.

Two stars, one dress - but the question is, who wore it best? Share your verdict in the comments box below.

SEE ALEXANDER WANG'S AUTUMN/WINTER '09 COLLECTION