Quote:

Richie Tweeted: Notice something missing? A few letters may not seem like a big deal, but for patients who need A, B & O blood types – these letters mean life. You are the #MissingType! Help the @RedCross fill the gaps by making an appointment to give blood...

Well, you have to admit that Richie's well-qualified: he once made a very "generous" blood donation when a stage fixture landed on his head.