Prince’s two ex-wives, Manuela Testolini and Mayte Garcia, reportedly organized a memorial service Tuesday night in Los Angeles. Among those who attended to pay homage were Nile Rodgers, Janelle Monaé, and Spike Lee — who reportedly said that a Brooklyn tribute service is being planned for June 7. (Pitchfork) Also in L.A., Stevie Wonder, Dave Chapelle, Nas, John Mayer, and Kid (of Kid & Play)…