Britain's Duchess Catherine's sister Pippa Middleton is reportedly "on the brink" of getting engaged.

Pippa Middleton is reportedly close to getting engaged to her boyfriend of two years Nico Jackson

The 30-year-old socialite and has been dating her stockbroker boyfriend Nico Jackson for two years and she's now reportedly keen to walk down the aisle.

A source told Life & Style magazine: "She's on the brink of getting engaged. She's dropped hints to Nico, but ultimately she's letting him pick the ring. The engagement will probably last only six to nine months."

Meanwhile, the couple sparked rumours earlier this year that they were taking their relationship to the next level after they were spotted house-hunting in London.

Pippa and Nico, 35, were spotted looking at a number of properties in the Battersea Park area, where the couple have been seen out jogging together in the past, including a £2.5 million four-bedroom terrace house and a £1.95 million three-bedroom flat.

If the duo do decide to invest in a property in the area they may find themselves mingling with their celebrity neighbours, who would include former Boomtown Rats singer Sir Bob Geldof, Duran Duran star Simon Le Bon and his former supermodel wife Yasmin Le Bon.

The brunette beauty has also been working on culinary skills in anticipation of setting up home with Nico, who is reportedly keen to start a family soon.