It’s no secret that since Kate Middleton’s grand entrance in to the the global spotlight following her fairytale wedding to Prince William at Westminster Abbey in April this year that the stylish British fashion icon worryingly appears to be getting thinner by the day, so much so, that Kate’s obvious weight loss is now giving her younger sister Pippa Middleton real cause for concern.

Pippa Middleton, 27, was recently targeted as a celebrity pin-up ‘Thinspiration’ by the Pro-Anorexia website to help them promote their unhealthy eating campaigns for a ‘thinner tomorrow’ but now it appears that they’ve tired of the successful business woman Pippa and are now targeting their unhealthy eating obsessions at her sister Kate, the the new Duchess of Cambridge.

Pro-Anorexia or Pro-Ana, dedicates itself endorsing anorexia and bulimia.

Pr-Ana is also notorious for using super-slim celebrities and other famous names in their ‘Thinspiration’ campaign to compete with each other at losing weight, including how to advise on the best way to vomit and give the best tips on how to use laxatives, hide weight loss and keep hunger pains at bay.

Pippa is so concerned about her sister Kate Middleton dropping at least two dress sizes to a tiny size six following her engagement to Prince William that she has taken to calling more than five times a day to have her mind put at rest that Kate is eating healthily and regularly.

Kate, 29, who openly confessed her love of Pizza and Haribo sweets is believed to have swapped her tasty treats for a low-fat mini-meals eating regime along with disciplined daily exercise in order to keep her famous figure well toned up:

“The weight is just falling off her tiny frame.

“Friends are always trying to get kate to eat something when they see her but she just ignores tham and refuses.

“She changes the conversation and makes an excuse like she’s eaten already or that she’s not hungry.

“William is starting to get worried about Kate because he understands only too well the responsibility Kate has taken on by marrying him and the last thing he wants is for her to succumb to the massive pressure and get ill”, said a close friend.