Butter Babes & Singer Style Sins! The Best & Worst Dressed Stars Of The Day.

By Leah Ornstein - RadarOnline.com Style & Beauty Editor

From the hottest Toronto Film Festival premieres to the city streets, Hollywood hottest stars were dressed to rock and shock on Tuesday – and

RadarOnline.com has all the photos!

At the TIFF premiere of Butter, the film’s leading ladies were dressed to impress in contrasting couture.  Jennifer Garner showed off her growing baby bump in a fabulously feminine Valentino number, while Ashley Greene rocked an uber-sophisticated cocktail dress.  And Olivia Wilde opted for a Grecian gorgeous Marchesa number, which screamed old Hollywood glamour!

Sassy rapper Kreayshawn wore dude duds while leaving Radio 1 studios, upping the wacky factor by using different colored plaid umbrellas – as crutches!

Former Pussycat Doll Nicole Scherzinger experienced an X Factor flop at the opening of a London Westfield shopping center, wearing a crazily cutout

cocktail dress with bright purple Yves Saint Laurent heels.

Red hot fashion was plentiful in NYC, as Elizabeth Banks heated-up the premiere of the short film Just a Little Heart Attack, pairing her sexy Dolce & Gabbana cocktail dress with a slender black belt and open-toed booties and Jennifer Hudson showed off her still-shrinking body in an uber-mini at Self Magazine’s Women Doing Good Awards.

To see all the rest of the best and worst dressed stars, click here.

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