Title: The Princess Diaries - Volume 4 - Glitter and Bows - Meg Cabot - book
Summary :
On an official visit to Genovia, Mia is learning about her future role as crown princess: speeches, inaugurations, high-society dinners? In her own way, of course! But most importantly, she finally knows that Michael, her great secret love, loves her too. Yet there's a problem: how can you, at 14 years and 8 months, be sure that a boy will stay in love with you for life?