BEST: Carrie Underwood showed off her superior stems at the American Idol Finale in a Lorena Sarbu tunic, pairing the embellished mini with Sergio Rossi Cachet slinbacks.
BEST: Rose Byrne looked lovely in lace at the X-Men: First Class NYC premiere, wearing a navy blue Marc Jacobs cocktail dress with Brian Atwood heels, a Kotur clutch and Cartier bling.
BEST: Jennifer Lopez looked diva-lightful at the American Idol Finale in Los Angeles, rocking a bodycon Michael Kors jumpsuit with Gucci heels.
BEST: January Jones showed off her baby bump in fab fashion at the X-Men: First Class NYC premiere, rocking an off-the-shoulder Preen dress with Prada heels.
BEST: Halle Berry sizzled at the FiFi awards, baring her belly in a super cutout Halston LBD, which she paired with Christian Louboutin heels.
WORST: Maria Bello wasn’t looking so charitably chic at the Shine On Sierra Leone fundraiser in Los Angeles, wearing an unflattering menswear look.
WORST: Mischa Barton headed back to the early 1990’s, sporting palazzo pants in London.
WORST: American Idol Season 10 contestant Naima Adedapo hit the show’s finale looking as tacky-as-could be, wearing silver from head to toe.
WORST: Katie Price (AKA Jordan) hit the town in London, wearing cutout tights as pants.
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WORST: Shauna Sand brought her wildly inappropriate style to dinner at a swanky restaurant in Los Angeles.
PHOTOS: Stars In The Best & Worst Fashions Of The Day