Today on Twitter, Rihanna visited the famous Cristo Redentor (or Christ the Redeemer in English) in Rio de Janeiro in Brazil! Joel Madden posted a picture of he and his lovely wife, Nicole Richie, at her birthday party last night, dubbing he and his better half, Mr. & Mrs Over The Hill! Brandy tweeted that she was filming something super top-secret in Atlanta and Trey Songz posted about his recent trip to Ghana. Willow Smith tweeted a picture of her pup asleep in her lap and Game showed off the lady in his life ... His daughter, of course! Cody Simpson declared his love for a specific fast food chain, while Big Sean showed love for Kanye West's 2008 album '808s and Heartbreak.' See what your favorite stars were chirping about today!