I'd love a boyfriend jacket, but I always end up freezing to death in our unpredictable weather. So, I'd like one that's fashionably cool and seasonally warm. My budget is £150, but I'm willing to stretch it for a gorgeous investment piece.
I may need to manage your expectations here. You can't really expect a skinny little boyfriend jacket to cool and feel warm. So, I suggest you consider a different - equally cool - jacket that offers a little more protection against the elements. Three styles are perfect for a British summer: the belted, the cropped - as worn by Cameron Diaz and Lindsay Lohan - and the ruffled blazer, à la Jessica Biel. All work layered over dresses or jeans and will handle a sweater if you need the extra insulation.
Belted, £99, Armani Exchange (020 7479 7760)
Cropped, £69, Mango (020 7434 3694)
Ruffle blazer, £145, All Saints (0870 458 3736)