Last week we reported that Tim Gunn will soon be in Boston, and now it appears that his "Project Runway" protoge Christian Siriano will also be visiting later this month. Siriano, the most successful winner in "Runway" history, will be attending the Theater Offensive's annual party and benefit ClimACTS!, filling in for Alan Cumming, who was slated to attend by cannot due to scheduling conflicts. Siriano will accept an award from the Theater Offensive on behalf of Cumming at the April 27 soiree. But Siriano's fierceness doesn't come cheap. Tickets to the party will set you back $150.