LONDON (AP).- Call it inspiration, call it opportunism — as long as you call it art. Like business bosses and tourism chiefs hoping for a royal-wedding boost, artists are using the upcoming marriage of Prince William and Kate Middleton as fodder for their work. A group of art students have posed in front of Buckingham Palace all dressed as Kate, a street artist has given Middleton a punk makeover, and a show by American artist Jennifer Rubell that opens Tuesday features a life-size wax model of William, and invites visitors to slip an arm through his and briefly live out dreams of becoming a princess. Rubell, a 40-year-old New Yorker best known for large-scale installations involving food, said that as soon as she heard news of the engagement in November, she knew she would use the event and its imagery in her work. “I also had the reaction that any woman has, whether you want to admit it to yourself or not: ‘What if that were me?’ “My first instinct is to be dismissive an