### Clue: I am heading to soirée wearing straw hat (7)
### Answer: BOASTER 
 ### Explanation: Definition: I am heading to soirée
 **1st letter of**(heading to) "soirée" **contained in**(wearing) BOATER(a straw hat).
Defn: Loosely, the clue could be a statement made by one bragging about his/her social status.
A WIWD clue.