Rihanna's Twitter Health Scare Worries Her Dad

Rihanna likes to work hard and party even harder, but her punishing schedule and boozy nights out are beginning to have an effect on her - and her Dad is worried.Ronald Fenty told The Mirror: "When I saw the pictures on Twitter I was worried like everyone else."A few weeks ago, Rihanna tweeted a picture of herself hooked up to a drip in hospital in New York. According to rumours, the star had