Sightings . . . sightings . . .

JAY Z and Beyoncé with Blue Ivy and Tina Knowles at New Orleans eatery the Caribbean Room ... PIERCE Brosnan leaving Nello on Saturday with the book “Max Perkins: Editor of Genius,” under his arm ... SERENA Williams at the Novak Djokovic Foundation gala at Sforza Castle in Milan hosted by designer Giorgio Armani ... SLASH and Whoopi Goldberg dining separately at Old Homestead Steakhouse.