Nicki Minaj is a sassy rapper on the rise, but can she achieve the smashing fashion status of her competition? The wig-wearing wonder hit The Late Show with David Letterman on Monday, wearing brightly hued and patterned harem pants (how MC Hammer of her!) with a space age top, oodles of jewels and combat boots. Though it is impossible not to Check It Out like her hit song demands, her look was definitely more of a flop than a top.

PHOTOS: Stars In The Best And Worst

We love Rihanna's creative sense of fashion, because she always brings her own edge by blending different looks together. The style star was spotted
in London yesterday getting her message across wearing a She Died of Perfection t-shirt under a grey Stella McCartney blazer with pleated khaki
trousers, finishing the look off with nude bowed heels.

PHOTOS: Rihanna's Funky Fall Fashion

Busy Phillips got charitably chic and pretty in pink for the 10th Annual Les Girls Tawdry Cabaret party in Los Angeles, while Julie Bowen showed off her Modern and flawless bod in a one-shoulder, curve-hugging mini.

PHOTOS: Stars Get Chanel Chic At Paris Fashion Week

Lil' Kim flopped in fishy fashion at the opening of La Scala boutique in NYC, while Amber Rose was a little too bejeweled at Paris Fashion Week.

See all the Best and Worst fashions of the day, by checking out the gallery in Style.

From inflatable swimming wings and bras to MC Hammer pants and fanny packs, stars sported some wacky and tacky fashions this week, but thankfully the powers that be put Paris Haute Couture Fashion Week on the style schedule, where glamazon gals walked the red carpet in devastatingly divine duds.

PHOTOS: The Best, Worst And Wackiest Fashions Of The Week

Jessica Alba was the Lady in Red of the fiercely fashionable week, hitting the Chanel show in a Spring 2010 embroidered white mini, which featured a slender red belt and then making her way over to Valentino, where she modeled a gorgeously ruffled, one-shouldered gown from the designer's Spring 2010 collection.  Painting her pout in scarlet lipstick, the brunette beauty ravished. Claire Danes looked anything but mellow in a multi-shaded Valentino strapless, while Gossip Girl duo Blake Lively and Leighton Meester rocked night-and-day looks at Chanel.