Ariana Grande Brings Out ‘Wicked’ Co-Star Cynthia Erivo for ‘Happy Days’ and ‘For Good’ at Eternal Sunshine London Show

Ariana Grande brought out Cynthia Erivo to perform at her Aug. 16 Eternal Sunshine stop at London’s O2. The “Wicked” stars sang “For Good” and “Happy Days” on the second night in the U.K. for Grande’s tour. Grande is currently on her Eternal Sunshine Tour, which shares a title with her seventh studio album. The…