Kate Middleton and Prince William -- who are expecting their first child together -- are on vacation in Mustique.
The couple are staying at a $30,000-a-week luxury villa.
Middleton's child is due in July, and she has taken to hypnotherapy to regain her appetite.
"Kate still looks at food and feels nauseous," a source said. "She has been plagued by that feeling you have when you've had food poisoning and your stomach's shrunk.
"She finds it very hard to eat a full meal and gets full very quickly. She will seek the help of a hypnotherapist in a bid to help with her appetite.
"The hypnotherapy is taking away any negative thoughts connected with food from the morning sickness, and replacing them with cravings for healthy, nutritious food.
"All in all, Catherine's very happy. With so much family around her and William, they're starting to enjoy the pregnancy after such a traumatic start."