The Stevie top by Tilly and the Buttons is a bit of a chameleon. Make it in jersey and it's a casual tee-shirt. Make it in linen and it's an elegant summer top. Make it in sequins and you're ready to party.
I made this recently in fabric gifted by Minerva, and you can read my blog about it here and also find a link to the fabric. In the meantime here are a few photos of the project.