Calvin Harris is reportedly planning to propose to Taylor Swift

The Scottish DJ, who started dating the 'Blank Space' hitmaker in March after they were set up by mutual friend Ellie Goulding, is said be preparing to get down on bended knee with a $1.4m engagement ring by the end of October.

A source close to the 31-year-old star, who was spotted shopping for jewellery at XIV Karats in Beverly Hills earlier this month, said: "He said he wanted something 'very special' for Taylor. He was asking about the best cuts and eyed a ring that was $1.4m! He was clearly eager to get the perfect rock, no matter the cost."