Kate Middleton helps to boost sister Pippa's profile
The Duchess Of Cambridge, who was pictured with her sibling at Wimbledon earlier this month, is reportedly doing whatever she can to boost Pippa's image.
A source close to Kate told LOOK magazine: "Kate clearly wanted to show that Pippa is truly back in the royal fold.
"The pair have been spending more time together and Kate's even been giving her some tips for her promo tour around the USA when she launches her party planning book there in October."
Royal officials were apparently furious when Pippa was pictured next to a friend waving a gun in Paris earlier this year.
And it was previously claimed that senior royals felt Pippa wouldn't be able to promote her book, 'Celebrate', in case it embarrassed her sister.
A source said recently: "She would normally be expected to appear on every chat show under the sun.
"I know she won't do anything that she hasn't run by the duchess' advisers, but it is still a very tricky situation.
"Party planner Pippa - Kate's maid of honour at her wedding to Prince William
in April 2011 - was offered the chance to have her guide ghost written, but insisted on writing it herself.
The source added: "She was offered a whole host of ghost writers but said no to them all and is very proud that it is all her own work.
"I just don't think she appreciated how much work it would take and may need some help from her editors."