An American webisite is reporting that, Nigerian oil, gas and aviation tycoon Kola Aluko was among a host of billionaires at Leo DiCaprio’s star-studded birthday bash. Aluko, a co-founder of the Made In Africa Foundation who was recently seen here lunching in Paris with Naomi Campbell, was among a group of wealthy businessmen at DiCaprio’s 39th birthday party at Tao Downtown late Sunday night where he allegedly spent $1.5 million on champagne.