63 Books Found

Based on your description:

"A young adult story about a young girl whose sister is a pageant queen and is engaged to a prince/duke of some other country. This girl is forced to go with her Mother and sister to that country. While they're there, she must be a part of a reality show about her sister falling in love with a royal. While she is there, she meets someone and they become friends and fall in love. After a little while, she finds out that he is a royal as well and feels tricked/like it was hidden from her. It ends with a happy ending."