Superstars,Eminem and Rihanna take part in the ALS ice bucket challenge

    Members of the audience at the final performance of Rihanna and Eminem's Monster Tour were thrilled by the hit-makers taking part in the ALS Ice bucket challenge.
The enthusiastic audience watched in excitement as Rihanna was to dump the icy water over Eminem, who was nominated by Dr. Dre.
The Barbados singer poured the contents of the tub over Eminem's head after a countdown as given by the audience.

Rihanna,with glee, doused Eminem who was nominated by Dr Dre with a bucket of water during the final leg of their tour in Michigan on Saturday.She,in turn was doused with water making her another celebrity participant on the long list of superstars participating in the challenge.

Eminem and Rihanna are the latest celebrities to participate in the ALS Ice Bucket Challenge, which helps to spread the message about Lou Gehrig's disease.Celebrities who have accepted in the challenge include Lady Gaga,Selena Gomez, Katy Perry, Justin Bieber, Taylor Swift and Chris Martin