Prince William was seen attending the lavish wedding of his friend, Hugh Grosvenor, at Chester Cathedral in northern England. Despite Prince Harry declining his invitation, the event was still filled with familiar faces from Britain's wealthiest aristocratic families. Grosvenor, the Duke of Westminster, has a net worth of nearly $13 billion and is known to have close ties with both William and Harry. The wedding was described as the society event of the year, with over 400 guests in attendance. While William looked dapper in a black tailcoat as an usher, his wife Kate Middleton and father King Charles III did not attend due to ongoing health issues. Harry declined the invite to avoid overshadowing the event with potential awkwardness between himself and William. The brothers have not spoken in over a year, showcasing the ongoing strain in their relationship.