Pippa is NOT engaged to Nico Jackson, says source close to Middleton sister, as rumours circulate that he proposed in India last week

+FashionModelling
As news of an engagement today circulated, a source close to Pippa Middleton says her boyfriend, banker Nico Jackson, 36, has NOT proposed.
The rumour mill went into overdrive when a US magazine reported that Jackson popped the question - and Pippa accepted - while the pair were in India at the beginning of December.The magazine claims that the couple will walk down the aisle in 2014.

The same source claims Middleton, 30, and Jackson, 36, have been celebrating their happy news in private since returning from their trip.

The pair arrived back from their trip to India on December 10, looking relaxed and tanned when they were photographed just after touching down at Heathrow.

Ever the gentleman, Nico steered their trolley, with its four pieces of luggage, through the airport.

At that time, there was no sign of a ring on Pippa's finger, nor has there been any official announcement since.

Pippa and Nico were first pictured together in February while on holiday in Mustique with the Duke and Duchess of Cambridge and the Middleton family.

In September, the couple went on another romantic break to the Caribbean, and also jetted off for a shooting weekend in October.

Former Edinburgh University student Pippa and Nico were seen laughing and giggling at the check-in desk before taking a low-cost flight from Inverness to London on their way back from a shoot in the Highlands. 

The duo are also big tennis fans and were regulars at Wimbledon over the summer looking very much in love as they followed the action on centre court as they held hands, kissed, and shared jokes between games. 

She wrote in her Vanity Fair column last month that when she was younger she told her family: 'If I had to get married, it would be in my tennis whites - shorts with no pleats or frills.' 

Nico grew up in a red-brick terraced house in a middle-class family in Folkestone before making his millions as a stockbroker at Deutsche Bank.

Unlike Pippa, who attended the prestigious Marlborough College, Nico was educated at the local Stella Maris Catholic primary school and then The Harvey Grammar School in Folkestone before heading to Kingston University.

Pippa has previously dated investment banker James Matthews, 37, and financier and former England cricketer Alex Loudon, 32.