Natalie Imbruglia performs at The Flackstock Festival
(Picture: WireImage)Natalie Imbruglia joined Coldplay on stage on Tuesday night at the third of their six shows at Wembley Stadium this month.
The 47-year-old performed with the British group and musician Jacob Collier, 28, to play her hit song Torn and sing a joint rendition of Summer Nights from Grease the musical, in tribute to Oliva Newton-John.
