The latest outfit Jessica Alba wore while strolling the streets of New York wasn't very springy, but the white Proenza Schouler PS1 bag ($1,225) she carried with it sure was. Proenza's PS1 collection has been a hit ever since it first debuted a few seasons ago — there have been endless colors and styles, including neon yellow, purple, and floral print, as well as classic black. But the small one Jessica toted around is just what your Spring and Summer wardrobe needs. Note that there are large PS1s, medium ones, and the wallet and clutch style. But we think the small size, like the one Jessica has, is superior because it fits all your necessities without being overly huge. Plus, you can wear it as a crossbody. If you've been on the hunt for a light-colored bag to carry all Spring and Summer, consider investing in Proenza Schouler's PS1 in the white color and small size. It'll look fabulous with all your warm-weather clothes, especially printed dresses and denim cutoffs.