14/08/2014 16:51 BST | Updated 22/05/2015 10:12 BST

Pippa Middleton: Spoof Tips On Pregnancy Sparks Legal Battle

Pippa Middleton: Spoof Twitter tips on pregnancy spark legal battle

It offers 'sage' advice to expectant mums, such as: "You will probably undergo lots of tests at this point. Don't worry though, you won't need to revise."

But a legal battle has blown up over the wise words – for they are a parody of the Duchess of Cambridge's sister, Pippa Middleton.

According to the Independent newspaper, as Kate prepares to give birth any time now, Pippa is thought to have taken offence over a novelty book offering her advice on pregnancy and parenting.

The tongue-in-cheek book, written by Mat Morrisroe and Suzanne Azzopardi, started life as Twitter account @Pippatips, which mocked the 29-year-old author for her predictable party tips in her real book, Celebrate.

Tweets include: "Headache tablets can be great in helping deal with a headache"; "Dressing up in nice clothes is a stylish way to look great at a party"; and "Form friendships by being nice to people you like".

After attracting nearly 50,000 Twitter followers, the pair decided to turn their project into the book 'When One is Expecting: A Posh Person's Guide to Pregnancy and Parenting'.

Although the book was published in June, Pippa's lawyers Harbottle & Lewis have written to the book's publishers, Icon Books, to demand the @Pippatips Twitter account be deleted.

Icon Books declined to comment. Harbottle & Lewis said it did not comment on client matters.

What do you think - funny or offensive?

Here are our 10 exclusive tips from Pippa Tips:

During pregnancy, it is advised that you do not eat sushi, blue cheeses, air-cured meat and pate. This makes it very difficult to shop at Waitrose.

You may have cravings and feel more hungry than usual. This is often known as 'eating for two', but if you were having twins you would be 'eating for three'. The simple rule is to take the number of people inside you and add one (you).

At 12 weeks it's time for your first antenatal appointment. Confusingly, this is for people who will help you give birth, not people who are against it.

Sex in pregnancy: 'Congi style' is a good position for pregnant women. As is 'The throne'.

You can try talking to your baby, but don't be offended if baby doesn't reply.

Giving birth can smart a bit, so relieve the pain by taking every drug you're offered. It is, however, considered bad form to bring your own.

A dirty nappy can give off a bit of a whiff.

Breastfeeding: Some mothers finding latching-on to be problematic, but a few unreturned calls should get the message through to any needy friends or relatives.

When you take your baby out, you'll often need to use the 'baby change room'. This is just for changing nappies, not for exchanging little ones you are disappointed with.

Try feeding your baby foods in colours that match your clothes, so people will think you are wearing an expensive 'splatter design'.