Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: She's been a member of the family for less than a month and today, Sweden's Princess Sofia got her first official introduction to royal life. The 30-year-old former glamour model was joined by her 36-year-old husband Prince Carl-Philip for the Victoria Dagen celebrations at Sollidens Slott in Borgholm. Dressed in a frilled white top and a fitted black skirt, the royal smiled and clapped from her seat beside sister-in-law Princess Madeleine, 33. The event was held to celebrate the 38th birthday of Prince Carl-Philip's oldest sister, Crown Princess Victoria. Also at the celebration, which was held at the Swedish royal family's summer home, was Madeleine's British husband Christopher O'Neill, 41.Sweden's newest princess Sofia made her first official appearance todayJoined new husband Carl-Philip, 36, for Victoria's Dagen celebrationsEvent was held to mark the 38th birthday of Crown Princess VictoriaAlso there was Princess Madeleine and her husband Christopher O'NeillMadeleine gave birth to baby son Nicolas two days after Sofia's wedding 
 Question:But thanks to Princess _'s reality TV and glamour modelling past, Carl-Philip's choice of wife initially proved controversial.

Sofia