Forum:Help with the mission "Three Leaf Clover"

I need help with the mission "Three Leaf Clover" in GTA IV. After I finished the mission "Waste Not Want Knots," I received the message from Packie McReary about the following mission and I went to Perseus in Algonquin as I was supposed to. Long story short, I came to Packie's house and I got the announcement that states that I must "wear a suit and tie with smart shoes before you meet Packie." I basically need help with buying the proper outfit for the mission because it's getting pretty annoying.