BEST: Kirsten Dunst was full of the joys of spring as she skipped along a Soho street in New York City yesterday, in a blue-and-white floral Louis Vuitton sun dress that was a refreshing change from her sometimes dowdy style. Strappy gold sandals gave a classy edge to her laid back look.

WORST: A thick red band saved Amy Smart from looking like she was wearing a trash bag, but the Butterfly Effect star still drowned in the reams of black fabric and heavy hardware at the grand opening of Lexington Social House in Hollywood last night. Maybe she should stick to a little black dress next time!

BEST: Proving that she can do no wrong, Pippa Middleton looked effortlessly chic as she walked along a London street in a white eyelet dress and denim jacket yesterday. The combination of girly and tough created a winning look for Britain’s most famous little sister.

WORST: Rough night, Kristen? The Twilight Saga: Eclipse star Stewart looked like she’d gone a head-to-head with a vampire after partying with British friends, Sienna Miller and Tom Sturridge at The Groucho Club in London last night. Her casual jeans, hoodie and converse trainers would have been a better fit for a walk in Hyde Park instead of a night on the town.

BEST: Victoria Secret model Selita Banks was a ray of sunshine in a  one-shoulder yellow dress at the launch of DIOR VIII hosted by Charlize Theron at Dior Boutique in New York City. The asymmetrical cut provided the perfect dramatic balance to off-set her blunt, blonde bangs.

WORST: 9021-Oh no! Shanae Grimes looked more like a frumpy housewife than a hip high school girl when she attended the 16th Annual Gen Art Film Festival at the Ziegfeld Theatre in New York last night. The hastily-pulled back hair piled high on her head and her ruffled skirt were a very unflattering combination for the pretty 21-year-old 90120 star.

BEST: Charlize Theron ruffled feathers as she looked as pretty as a bird in a white Dior dress to host the launch of DIOR VIII at the Dior Boutique in New York City. The Ocsar winning actress is a big fan of the design house and recently posed in the ad campaign for their new watch collection.

WORST: Usually flawless Nicole Kidman branched out of her chic comfort zone in a zigzag patterned green and brown dress at the CMT Music Awards in Nashville, Tennessee last night. While she can usually pull off anything, the earthy color combination made the statuesque star look like a tree. Lilac heels and a flame-red ponytail topped off the mismatched look.

BEST: This is how you do earthy! Sin City star Jaime King was a natural beauty at the Super 8 premiere in Los Angeles in a flowing Proenza Schouler dress that was a perfect summer style despite the fall-inspired brown, orange and beige color combination.

WORST: Whitney Port seems to have lost her style along with her blonde hair. While we love her fiery-red new color, the rest of her look ripped jeans and sweater look lacks any spark.