A bright jacket is an item that can completely transform a look, and this summer they come in particulary lovely shades.
This seller offers a jacket in 3 colors: Mint Green, Coral and Peach. It has long sleeves so if you live in a warm place consider it won't be good for the whole summer.
Sizes: 10-24 (UK)
Price: 13 GBP, not including shipment which varies.
Here are some examples of how such jackets fit into daily outfits.
All pictures are taken from here.