The Rolling Stones have invited Adele, Lady Gaga, Florence + the Machine’s Florence Welch and Paloma Faith to perform at Barclaycard's British Summer Time Hyde Park festival this summer, the Sun reports. The gigs are set to take place on July 6 and July 13.

"The Stones would love to get Adele on with them,” said a source. “It would be a massive coup, even for them, because she's been a bit reclusive since her son Angelo James was born. She is the name they want to announce as their special guest — and their invite should be special enough to get her out on stage.”

"At the minute it's 50/50 that she'll do it, but Mick is quietly confident he can pull it off," the source went on to say. "They want to make the Hyde Park shows a highlight of their tour, and her appearing would make it really special."

"The group think female performers are a great complement for Mick ever since Florence Welch got on stage with them at London's O2 Arena last year for Gimme Shelter,” the source told the Sun. "Gaga, Paloma and Flo would all do well in the Hyde Park shows, but Adele is the big prize this summer."

Click here for more info on the upcoming fest, which also features headlining sets by Bon Jovi, the Beach Boys, Elton John and Elvis Costello.