I don't know what this Celia Birtwell for Topshop umbrella looks like when it's unfolded, but tucked into its little carrying case, with those pretty little ruffles sticking out the top, it looks cute enough to make you hope it doesn't rain (not that we don't hope that anyway, of course) so you can carry it as an accessory. It's £18, and given the recent weather here in the UK, I wouldn't imagine it'll be in stock for very long, somehow...
Moschino ruffle trim umbrella | Marks and Spencers' striped umbrella | Beautiful umbrella designs by Chantal Thomas