Her slender frame first caught William's eye at a university charity fashion show.
And it seems Kate Middleton is keen to ensure she remains looking her best for her big day in April.
When one well-wisher commented on her slight physique during a recent visit to Belfast, the future queen revealed she's been watching her weight in the run up to her wedding.
Housewife Heather Lindsay said: "I told her not to lose any more weight and she said it was all part of the wedding plan."
Photo: © Rex