New mother Pippa Middleton
has been spotted enjoying a bike ride through Chelsea for the first time since she gave birth to her baby boy.
The Duchess of Cambridge
's younger sister, 35, was seen cycling past shops in the upmarket borough on Thursday.
Sporting a black parka jacket and leggings, the mother-of-one climbed aboard her bicycle to navigate the capital's streets.
She completed her outfit with a pair of bright white trainers in an effortless, sporty look.
Pippa, who married hedge fund manager James Matthews in a glamorous society wedding last spring, also wore large framed sunglasses and a grey cycle helmet as she pulled her bike onto a nearby pavement.
This is the first time Pippa has been spotted on her bike since she gave birth to her son Arthur in October.
Pippa and husband James Matthews welcomed their baby boy, weighing 8lb and 9oz, on October 15 but didn't immediately reveal his name.
He was since named Arthur Michael William.
The name Michael is a touching tribute to Pippa's father and her husband's younger brother who died while climbing Mount Everest in 1999.
Michael Matthews went missing on the mountain's infamous Death Zone while he was trying to become the youngest Briton to climb the world's highest peak.
The newborn was delivered at the £7,500-a-night Lindo Wing at St Mary's Hospital in Paddington - the same private maternity unit where her older sister, the Duchess of Cambridge, gave birth to her three children.
But it appears Pippa is already back in shape less than two months after giving birth to her son.
She was spotted earlier this week out on a walk with her dogs to catch a breath of fresh air.
The new mother looked effortless in a pair of grey leggings and a black padded coat as she stepped out for a stroll near her £17M West London
Pippa shared details of her pre-natal workout routine throughout her pregnancy in her Waitrose Weekend column, revealing how she didn't let her regime fall by the wayside throughout the nine months.
She admitted she'd given up jogging but was enjoying a whole host of other workouts to stay fit and healthy.
'I stopped running — not because I read it was unsafe, just because I rather liked the idea of giving my body (and growing baby) a rest from pavement pounding,' she explained.
She added that she was 'conscious of holding my tummy in (as if giving your baby a hug) to support my back and ensure that post-baby, my old favourite jeans will still fit... eventually.'