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: Wearing a retro pair of red shorts and clutching his father's hand before treating the crowds of well-wishers to a wave, one-year-old Prince George show at his sister Charlotte's christening on Sunday. George arrived wearing an outfit by designer Rachel Riley - one of the Duchess of Cambridge's favourite childrenswear designers - which was almost identical to one worn by Prince William to meet his newborn brother Harry for the first time more than thirty years ago. And it seems that the royal tot, who turns two this month, has the midas touch after the embroidered smock and bold shorts sold out within hours of him making an appearance.Prince George arrived for the christening in a red and white outfitEnsemble is almost identical to one worn by William 30 years agoGeorge, who is two this month, caused smoked set to sell out 
 Question:This is a must-have for all boys especially after Prince _ was spotted wearing his at the polo!.

Prince George