Birdies Cofounders Bianca Gates and Marisa Sharkey Share Their Must Haves

Sharkey adores her Chanel Wallet on Chain ($4,125) since it goes with everything and is versatile. "You can literally wear it every single night for the rest of your life, no matter what you're doing. It's something I think you can use forever and actually very frequently," she says, crediting girl math. The bag perfectly fits her going-out essentials like her phone, a mini Aquaphor, a Charlotte Tilbury lip gloss, and her credit cards. "You can wear it to a black-tie night with a fancy black cocktail dress, or you could wear it with jeans and an amazing fun pair of Birdies flats and a little sweater," she says.