Pippa Middleton and Alex Loudon split
Pippa Middleton and Alex Loudon appeared to be on good terms when they attended Wimbeldon with Pippa's parents in June this year. Image credit: REUTERS

Pippa Middleton has reportedly split from her long term boyfriend Alex Loudon.

The Duchess of Cambridge's sister broke up with ex-cricketer Louden, 31, following a series of recent rows, it is understood.

An unnamed source told The Sun that Pippa, 27, whose profile soared following the royal wedding, has sought refuge with her sister after the split.

Pippa reportedly spent the weekend with the royal couple at the Queen's Balmoral estate in Aberdeenshire where she has been recovering from the breakup.

Pippa Middleton and Alex Loudon split
Pippa Middleton (L) and ex-cricketer Alex Loudon have reportedly split. Image credit: REUTERS

The couple's romance seemed stable last month when they were photographed kissing passionately outside a charity boxing function.

But speculation has intensified in the months following the royal wedding that the pair had drifted apart due to the media attention she now enjoys.

Pippa's status as an international sex symbol after walking up the aisle behind the Duchess of Cambridge in a figure-hugging white bridesmaid's dress is thought to have created tension between the pair.

Loudon, now a financier, had been dating Miss Middleton for more than three years.

View our photo gallery: Pippa Middleton and Lover Alex Loudon Break Up [PHOTOS]

Pippa Middleton at royal wedding
Since the months following the royal wedding, it is said Alex Loudon has become uncomfortable with Pippa's heightened media attention. Image credit: REUTERS