Thank you for your responses! :)
I think I'll go for Tillys first pair - the turquoise rhinestone strappies (and a bargain at only £30!!!)
Then again, mumatron the wedges from New Look are gorgeous...thank you all for your input.
One more question - do you think this shrug would look terrible?
I probably will not wear a shrug all day so do not want to spend too much money on it, but need something to cover up my arms until I am safely tucked away indoors :)