A dress code, plenty of champagne, a swimming pool and guests as Leonardo DiCaprio, Rihanna’s thirtieth birthday was earlier this week, a huge feast, exactly as one would expect from a world star. It all started with a four-course dinner in New York, where mostly family and some close friends were present. A source describes it as a ’very elegant gala event, at which the guests include gnudi with caviar ate, and peppered filet mignon. Rihanna shone as year old in a shiny purple ball gown. Toni Braxton gave a performance. Someone knows to tell that she is one of RiRi’s more intimate friends, which helps her that Rihanna is a big fan of her.