Pippa Middleton was positively glowing in a tailored plum dress at a Spectator party at Belgraves Hotel in London , on Tuesday night . The 31-year-old , who is a regular columnist for the weekly cultural and political magazine appeared relaxed and happy at the event . And just weeks away from the birth of a new niece or nephew , she looked demure in the purple number by with a coral belt and matching high heels , which served to showcase her slim physique . Scroll down for video . Plum dream : Pippa looked happy and relaxed in the purple dress at Spectator Life 's third birthday party at Belgraves Hotel in London . Pippa 's plum pencil dress . Click to shop Tabitha Webb 's current collection ! Visit site . We do love to see Kate and Pippa out and about . We 've been treated this past week to many royal engagements , which means a lot of spying on Kate 's maternity fashion . And now it 's all been topped off with an appearance by Pippa at a party in London . We are so spoilt ! Pippa stunned in a simple pencil dress by one of her favorite designers , Tabitha Webb . The cute plum number suited Pippa 's tanned skin to a tee and she topped it all off with a studded clutch by Hoss Intropia , which brought out the color of both her ribbon waistband and pointed courts . Sadly , neither the dress or the bag are up for grabs , but if you click to the right , you 'll head to Tabitha Webb 's website where you can shop the current collection . The brand has n't been around long . It launched its first bespoke collection in 2013 with its aim to make English elegance accessible . And it 's a job well done as she 's now gained a huge celebrity following . If you 're loving Pippa 's plum style , see our edit of exciting options in this rare hue below . Cameo Play with Fire Strapless Dress at NastyGal ( Now $ 117.60 ) Visit site . KAMALIKULTURE by Norma Kamali Sleeveless Shirred Waist Dress . Visit site . Badgley Mischka Collection Neck-Twist Day Dress at Neiman Marcus ( Now $ 198 ) Visit site . Halston Heritage Side-Twist Pleated Dress at Neiman Marcus ( Now $ 225 ) Visit site . The flattering knee-length frock by Tabitha Webb had stylish cap sleeves and featured boxy pockets - and she kept her legs bare , all the better to show off her tan . She completed the sophisticated look with subtle accessories including a small embossed box clutch from Hoss Intropia , a gold watch , simple gold chain necklace and earrings . The brunette , who wore her hair in loose , glossy curls , even kept her make-up subtle . The Spectator was first launched in 1828 , making it the oldest published magazine in the English language . Spectator Life is the lifestyle supplement from the main magazine and the Duchess of Cambridge 's sister has contributed columns about food , truffle hunting and wine tasting since December 2012 . Pippa joined other celebrity guests to celebrate the supplement 's third birthday at the swanky Belgravia venue . The Duchess of Cambridge 's sister ( pictured right ) was seen in company of Andrew Neil ( pictured left ) who is the Chairman of the Press Holdings Group - which owns The Spectator . Familiar faces at the bash included Guy Pelly , an old school friend of Princes William and Harry , who is also godfather to her nephew Prince George . The nightclub owner was escorted by his wife Elizabeth , who teamed her crisp white shirt with an acid lemon skirt . Pippa talked and posed for pictures with Andrew Neil , the Chairman of the media group that owns The Spectator . The brunette matched her accessories accordingly with her belt and clutch bag all in a similar nude shade . Royal BFF : Guy Pelly ( pictured right ) is close friends with the Duke of Cambridge and Prince Harry , and attended the party with wife , Elizabeth Pelly . This is only Pippa 's second outing since returning from the US where she was in talks with the NBC network about a presenting role . A keen sportswoman , who 's currently in training for the 50-mile London to Brighton Bike Ride , she recently stunned in an ice-blue floor length gown at the Disability SnowSport UK Ball . She met Heather Mills McCartney at the event and gave a speech in which she called for there to be more winter sports opportunities for disabled athletes . Windswept in plum ! Pippa was all smiles as she entered Belgraves hotel for the party , wearing a mulberry wrap coat over her Tabitha Webb frock .
The Duchess of Cambridge 's sister attended the party at Belgraves Hotel . She wore a Tabitha Webb dress and Hoss Intropia clutch . The 31-year-old is a columnist for main magazine , TOWIE . The Spectator 's Lucy Mecklenburgh and royal chum Guy Pelly also attended .