Bags are like artillery for the fashion conscious. They protect us from having a bad outfit day, transform drab outfits to fab instantaneously and, very often, the purchase of a new one can lead to a psychological thrill like no other.

Handbag enthusiasts will know what we’re talking about, and we’re just about to amplify that thrill ten-fold. Cast your shoulder candy hungry eyes on the block-colour sensation that is Proenza Schouler‘s PS11 classic shoulder bag.

In an updated chartreuse, mint and yellow hue for spring summer 2012, the PS11 is the epitome of a new season investment bag for us.

The detachable and adjustable fabric shoulder strap lends perfectly to this season’s athletic feel, whilst the inverted light gold-toned pyramid hardware defines embellishment with a modern twist.

The tri-colour textured leather means you can play season-appropriate and clash the PS11 with your favourite pastel dress, or, team with a printed shirt, dark bottoms and heels for city-chic with a heady dose of bright.

Proenza Schouler PS11 Classic Shoulder Bag, £1,375, available at My Theresa