Shocking And Rocking Thursday Threads: Best And Worst

Christina Applegate hit the Late Show with David Letterman on Wednesday, promoting her latest flick, Going the Distance in truly fab maternity mode. The beautiful blonde actress rocked a polka dot Valentino frock with black patent peep-toe heels, flushed with that pregnancy glow.

Did Little Bo Love lose her sheep? Or just her sense of chic?  The wacky Hole front woman stepped out in Paris, looking totally wacky in clashing duds.  With a scarf wrapped around her head granny style, she contrasted the look with lace nylons and leopard print ballet flats.

Serena Williams channeled Bam Bam, looking oh-so-Flinstones in a Dolce & Gabbana mini to celebrate her Hamptons magazine cover in New York, while Katy Perry, also in NYC, wore a kitty cat cardigan, which didn’t exactly have us purring.

Kristin Cavallari showed off her new Farrah Fawcett 'do in Beverly Hills, courtesy of the Neil Lane salon.  The Hills hottie balanced out her uber-tiny cutoff shorts with an oversized black blouse for a sensational summer look.

What A-lister can’t get enough of her Chanel clogs?  Check out the gallery in Style and find out.