Beyonce and Jay-Z toast their fabulous lifestyle over lunch in Paris

By DAILY MAIL REPORTER Joie de vivre: Rapper Jay-Z and singer Beyonce Knowles arrive at L'Avenue restaurant in Paris for lunch yesterday They're two of the world's biggest music stars with an estimated net worth of $750million between them.So there's no doubt Beyonce and Jay-Z had plenty to celebrate as they raised glasses of rosé champagne in Paris yesterday.The superstar couple joined their