AITAH for Pulling Wedding Funding?

AITAH for pulling my twenty thousand dollar wedding contribution after my sister uninvited my wife?

My sister Jen and I have always been close. When she got engaged,

I offered to cover the catering and venue costs as a gift. But yesterday,

she sent out the final guest list. I noticed my wife,

Sarah, wasn't on it. I thought it was a mistake. I called her,

and Jen said Sarah doesn't fit the aesthetic of her high fashion wedding.

She actually asked me to come alone. I told her if my wife

isn't welcome, my money isn't either. I cancelled the payments.