"I’m stressed out with the wedding and I keep smo*king to calm my nerves. I do it even though I know it is really bad for me and I know I need to stop. So I’m thinking I am going to have hypnotherapy to help me get over it. I’d never say to kids, ‘This is cool.' It’s a really bad habit that I need to quit. Says Katy Perry. Check out her wallpapers...