The Duchess Of Cambridge's sister Pippa Middleton has reportedly split from her longtime boyfriend.

Pippa and Swiss banker Nico Jackson have called time on their relationship after three years, editors at Usmagazine.com report.

The pair was last spotted together in London in September (15).

A source tells the publication, "It was mostly due to geographical issues. They were rarely together since his move (to Switzerland) and it just caused too much strain on their relationship. They still love and respect each other."

News of the split emerged on the same day Catherine, Duchess of Cambridge and her husband Prince William were pictured visiting a mental health charity in London. The royal couple then watched a Rugby World Cup match at Twickenham between Wales and Australia.

Catherine's brother James was also at the center of love split news last month (Sep15) amid reports he had called off his relationship with model/ presenter Donna Air. However, the couple later released a statement confirming they are still together.