[Lady Pi Phi]

I didn't want to hijack an unrelated thread.

I am going to a wedding with the new Mr. Pi Phi in 2 weeks. A very good buddy of his is getting married. I have never met his friend before.

Mr. Pi Phi is giving cash as a gift, but I am wondering what the proper etiquette for me is? Do I give a gift of cash myself, and if so, how much? Do I contribute to the cash gift from Mr. Pi Phi or do I even have to give a gift?

Help?