Alexa Chung and Alex Turner have reportedly ended their four-year relationship.
The model and TV host, 27, and the Arctic Monkeys frontman, 25, are said to have drifted apart as their schedules became more hectic and work took them abroad.
A spokeswoman for Alexa told the Sunday Mirror: "It's completely amicable - but yes it's true. They have split."
A source added: "Things haven't been going well and they haven't seemed like a couple for the past few weeks.
"They really wanted to give it a go to hold it together and seemed to be getting back on track - but things got bad again and they both decided enough was enough."
Alexa is understood to have moved out of the New York apartment she shared with Alex, but the pair are apparently keen to remain friends.
Former T4 and MTV presenter Alexa is currently working on a new TV show.
Meanwhile, while her musician ex is busy on tour promoting the band's fourth album Suck It And See.