Let's make this birthday one to remember.

42 years old (Born on September 10, 1982)

Happy Birthday, Cat Marnell! May your day be as fabulous and delightfully chaotic as your legendary beauty routines and unforgettable Vice adventures. From Lucky to XO Jane, you've dazzled us with your fearless honesty, razor-sharp wit, and an uncanny ability to turn mascara mishaps into literary gold.

Here's hoping this year brings you even more glittering success—whether it's penning another bestseller or simply mastering the art of eyeliner application without smudging (though we secretly love the drama). Keep inspiring us all with your unapologetic authenticity; after all, nobody does glamorously messy quite like you. Cheers to another iconic year!