Natalie Portman, Idris Elba, & More Stars Check Out Adele's Hyde Park Performance in London!

The stars are stepping out for Adele‘s big night! Natalie Portman joined Idris Elba and his 20-year-old daughter Isan Elba at the 34-year-old entertainer’s performance during the American Express Presents British Summer Time Hyde Park concert on Saturday (July 2) at Hyde Park in London, England. PHOTOS: Check out the latest pics of Natalie Portman