Can Catholics attend a second wedding?

My wife and I are Catholic. One of my siblings got married after divorcing. My sibling is Protestant and in their first marriage were married in a Lutheran church. If we go to the reception are we supporting this marriage? How do I support my sibling?

The following links should assist you in understanding some guidelines for discerning whether to attend this wedding. If you have any further questions or concerns that are not answered by these links, please contact Catholic Answers directly.

Recommended Reading:
What are the rules for attending weddings?
** Why doesn’t the Church forbid Catholic attendance at invalid marriages?

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