Pippa Middleton has reportedly given birth to her third child, a girl

The popular sister of Kate Middleton has reportedly given birth to her third child with hedge fund manager husband James Matthews.

Pippa Middleton has reportedly given birth to her third child.

The socialite, 38, and her hedge fund manager husband James Matthews, 46, welcomed a baby girl a couple of weeks ago, according to People magazine.

Further details including the baby’s name have not been publicly disclosed.

Pippa Middleton first revealed her baby bump during the Queen’s Platinum Jubilee events. Picture: Getty Images

The couple already have a three-year-old son, Arthur, and one-year-old daughter, Grace.

The sister of Kate Middleton, the Duchess of Cambridge, revealed her baby bump during the star-studded Party at the Palace concert for the Queen’s Platinum Jubilee in London last month.

The columnist received global fame after serving as bridesmaide at Kate and William’s 2011 wedding. Her fit silhouette in a fitted Alexander McQueen own sent tags wagging.

Pippa Middleton and her husband James Matthews have expanded their brood.

She even went on to write about it.

“I must say that (my backside) – though it has enjoyed fleeting fame – is not comparable (to Kardashian’s),” Middleton wrote in a column for the UK’s Spectator.

She‘s kept her family life private but last year did reveal becoming a mum had slowed down her fitness regimen.

“My running has been more after babies and toddlers than crossing finish lines, which I’m fine with — for now,” the passionate runner told Hoka One.