It's baking here today. Last resort is to dust off the only day dress I own.
Except I only wear dresses on mega important occasions (last three times included DH's very posh works do, a royal garden party and my wedding!) and I feel unutterably self conscious. Also I'm pretty fat and my enormous white calves are embellished with midge bites, scars from biking incidents and two asymmetrical sunburn patches from yesterday 
But on MN someone always comes along to tell you it's fine, right? [hopeful]