Rihanna was spotted over the weekend slipping into a sound studio in Los Angeles. The singer was said to be putting the final touches on back-up vocals that will be used during her upcoming “Last Girl On Earth” tour. As previously reported, the pop diva will kick off her world tour this Friday, April 16th in Antwerp, Belgium, with Ke$ha as her opening act. Ticket sales for Rihanna’s tour are said to be brisk and on par for a celebrity of her status.
And in other RiRi news, the singer shot the video for her “Rockstar 101” single over the weekend. Motley Crue bassist Nikki Sixx said Rihanna personally asked him to make a cameo but that he respectfully declined her offer. Nikki tweeted the news to his loyal following- asking them what they thought about his decision.