News By TooFab Staff | 6/15/2010 7:03 PM PT Former star of "The Hills," Lauren Conrad, is the newest face to rock a Milk mustache. The reality star-turned-writer debuted her new "Got Milk?" ad earlier today at The Grove in L.A., where she also signed copies of her latest book, "Sweet Little Lies."(Shop LC's flirty fashion!) LC, who was just nominated for a Teen Choice Award, will release her 3rd & 4th books in October.