You also need to know how to work that red carpet. Dijanna Mulhearn’s “Red Carpet Oscars” shows us, in exhaustive, extravagant detail, all the actresses and, occasionally, actors who have.

Some stars are playing it safe, while others are taking risks that could land them in the history books ... Oscars. Ariana Grande leaned all the way into her Glinda era on the Oscars red carpet.