Kate Middleton is being warned she may reduce her chances of becoming pregnant if she gets too thin.
Specialists believe The Duchess of Cambridge needs to put on weight to increase her hopes of having a Royal heir.
The warning comes after reports that Kate, 29, is due to meet her gynaecologist Alan Farthing in the next few weeks to receive fertility advice.
But experts last night told The People that they would urge Kate to pile on the pounds to increase her chances.
Experts have suggested Kate’s weight could now be as low as seven stone.
She stands between 5ft 8ins and 5ft 10ins, meaning her Body Mass Index could be around 15.
Body Mass Index is a scale which combines height and weight to get an idea of a person’s body shape and proportions. Doctors suggest an ideal BMI is at least 18 or 19.