Just 24 hours after ago Duchess Kate the Great sent the Reiss website in meltdown, due to the demand for the fabulous Shola dress she wore when she met the Obamas (36 hours on the site is still experiencing difficulties!) Now it is time for the Pippa effect to kick in. The gorgeous Pippa Middleton, currently the No1 most searched for celebrity on the internet, was photographed out and about in London today. She was sporting a great dress from Zara. The dress, currently available on the Zara website, is a great Summer casual look. Giving the impression of a t-shirt and mini skirt, this two-tone dress looked great on…