Rihanna fans are again talking about her, but this time it is not about her songs. It is her new look that had brought her into limelight. The singer wowed her fans with a variety of spectacular outfits as she kicked off her European tour. Rihanna's "Rude Boy" led Billboard's Hot 100 singles chart for a fifth week on Thursday, once again fending off runner-up "Nothin' on You" by B.o.B featuring Bruno Mars. Rihanna tour starts on April 19th Hallenstadion, Zurich, Zurich. She has been added her name to music's biggest show of girl power and she will be part of this summer's Lilith Fair festival tour. The R&B star will make a special appearance at Lilith’s Salt Lake City concert in Utah on 12 July. The 36-city tour will commence in Calgary, Canada on 27 June (10) and feature acts including Lilith Fair co-founder Sarah McLachlan, Emmylou Harris, Loretta Lynn, Beth Orton, Erykah Badu, Mary J. Blige and Sheryl Crow. Rihanna's Lilith tour date will come during her upcoming Last Girl on Earth North American tour. Grammy Award-winning singer Rihanna will bring her mix of R&B, rap and reggae to the New York State Fair when she performs at the grandstand at 7:30 p.m. Saturday, Aug. 28, as part of Rihanna “Last Girl on Earth” tour. Rihanna and Lady Gaga are riding high off their current hits from their latest albums “Rated R” and “The Fame Monster,” including Rihanna’s current No1 “Rude Boy” and Gaga’s Top 5 hits “Bad Romance” and “Telephone.” Now in an effort to cash in on their recent chart status, their albums are getting the remix treatment. The rocking star Ke$sha is set to tour the US alongside Rihanna on the Bajan’s ‘Last Girl On Earth Tour’ this summer. There was a big writing camp with 50 other producers writing for Rihanna’s next album," Cruz told the UK's Daily Star. "They had hired out 20 to 30 different studios and had everyone in there collaborating, switching people around. Organizers of the revived Lilith Tour have announced the addition of superstar Rihanna to the Salt Lake City lineup, as well as the final 20 dates for the summer outing. Since last check, 16 shows have been added to the plan, which now encompasses 36 North American stops. The trek kicks off June 27 in Calgary and runs through an Aug. 16 performance in Dallas, TX. Tickets for Last Girl on Earth tour are one sale now so don’t miss the chance to get tickets online.