High-end women’s apparel label, Proenza Schouler, is all about very functional, yet stylish pieces. The label’s designs have been described as "sporty" and "youthful", and their shapes are usually "minimal" and "sleek".

This "simple and sleek" formula of founders and co-designers Lazaro Hernandez and Jack McCollough is currently a favorite young Hollywood since the one of the Olsen dolls was seen sporting their PS1 bag.

When not sporting couture, celebs are often spotted going about in casual garb – probably still very expensive, their look still completed with a designer handbag.

Their bag of choice? The PS1. There’s a lot to love about this bag. It’s very cool and functional, and works perfectly jeans and tops – even goes well with the Olsen’s bohemian-bag lady style. It’s very roomy and a bit slouchy, which is why it’s perfect for the laid back chic look.

Another plus to the PS1 is that it comes in three ‘sizes’ – the pouchette, and the medium and large satchel . It also comes in a number of colors and materials -leather, python, suede.

The Proenza Schouler PS1 will set you back $895 for the pouchette, $1,595 for the medium satchel, and $1,995 for the large satchel. Available at Barney’s New York.

Image source: Barney’s NY