By Emily Sheridan
Pippa Middleton has spent the past few weeks living the celebrity lifestyle in her own right as she promotes her debut book.
However, the busy author still has time to hang out with her famous sister Catherine, Duchess of Cambridge as the pair enjoyed an evening together on Wednesday.
The Middleton sisters made a low-key appearance at a charity fundraiser at the Burlington Arcade in central London, with Kate accompanied by her puppy Lupo.
The pair were attendance the Burlington Bazaar, organised by Lady Tollemache to raise money for the Ormiston Children.
Kate, 30, was wrapped up warm for the cold weather in pair of skinny jeans, brown suede boots, black top, brown knee-high boots and a suede fur-trimmed jacket.
Meanwhile, younger sister Pippa, 29, went for a colour injection with a blue leather jacket, spotty scarf, skinny jeans and black leather knee-high boots.
Accompanied by a friend as she hailed a taxi, it appears Pippa had bought a new house plant at the charity bash.
The event was held in conjunction with Country & Town House magazine with the £20 entrance fee going towards East Anglia charity Ormiston.
It was a rare glimpse of Kate and William's cocker spaniel Lupo, who keeps the Duchess company during her husband's long stretches away with the Armed Forces.
Wednesday night is the first time Pippa and Kate have been seen together since the younger sibling's publicity tour to New York.
She launched her party planning book Celebrate last month with publicity events in both New York and London.
Pippa said at the London launch: 'It's incredibly exciting and I feel really lucky to be in this position to publish a book so that's great.
'It has been a crazy couple of years since my sister's wedding but it's had its upsides and downsides I just feel really fortunate to be able to build a career as a writer.