Tops & Flops: The Week in Fashion

Is Reese Witherspoon's little black dress the picture of class, or is it missing some sass?

Does the Duchess of Cambridge's style put other royals to shame, or are all her outfits starting to look the same?

Is Carrie Underwood's Oscar de la Renta gown off the hook, or is she incapable of pulling off this look?

Are the youngest members of the Kardashian family ready to take the stage, or dressing way too old for their age?

Should Kourtney Kardashian's ruffled collar be the toast of the town, or does she look like a clown?

Is Kylie Minogue hot in red lace, or missing a sort of grace?

Does Katharine McPhee's dress have you sold, or is her style a little too old?

Is Mena Suvari ahead of her time, or committing a serious fashion crime?

Does Melanie Brown pull off this unconventional collar, or does this criss-crossed dress look like it cost a dollar?

Does Kaley Cuoco's structured outfit make her look super-lean, or are you not feeling the mint green?

We're now post-Oscars, but there's still plenty of fashionable looks to see -- so which stars look amazing, and which ones' stylists should flee? You decide!