The idea of using lettuce as a vessel for shovelling delicious things into one's mouth is nothing new, but it is a handy weapon to have in your weight loss arsenal. There are loads of things you can do with a sad bit of iceberg or romaine lettuce; whether it's these Virtuous Vietnamese Lettuce Wraps, or swapping the tacos in this yummy Mexican prawn recipe for something even more saintly. Thinspiration Millie Mackintosh even has a burger in hers sometimes. I had some leftover