Blue Ivy steals the show on piano in surprise appearance at Jay-Z's 30th anniversary concert

Blue Ivy made a surprise appearance at her dad, Jay-Z's Reasonable Doubt 30th anniversary concert at Yankee Stadium on July ...

Jay-Z brings out Beyoncé and Blue Ivy, 14, for surprise performances at ‘Reasonable Doubt’ 30th anniversary show

On Friday night, the "99 Problems" rapper, born Shawn Carter, kicked off the first of three shows at Yankee Stadium in the ...