Its been reported by TMZ that superstar Rihanna has had to cancel her show in Sweden earlier today due to the songstress being hospitalized due to a sudden case of the flu. The songstress then tweeted a pic of her arms being hooked up to an I V. and released the following statement. Sorry Malmo “It would have been a great time…so much better than being sick with the flu, ugh! I’m really disappointed I couldn’t be there.”