40s: All those distracting insecurities you might have felt as a younger woman in her 20s and 30s have washed away. You no longer feel the pressure of having to pretend like you have an awesome life, because you do. You finally get it: You're the total package and what all your mentors told you way back when is actually TRUE: You can do and be anything. So, it's high time you make sure your closet possesses the same power. From a good gown to a timepiece that'll last, it's time to choose a handful of pieces that mirror the babe that you are.

A Cashmere Sweater — Stop wearing those itchy acrylic sweaters — you deserve more. A well-fitting cashmere sweater is a must.
Isabel Marant Phil Sweater, $369, available at Matches.

A Watch — It's ti-iiime. Go for broke with a beautiful timepiece you can one day pass on to the next generation.
Piaget Altiplano Watch, $24,000, available at Piaget

A Good Gown — Your prom dress may have been a little lackluster, but the dress you can wear (and can afford!) in your 40s should be nothing short of spectacular.
Lanvin Brocade Gown, $4,634, available at Browns.