Can a Sikh wear a turban in a christian church?

I'm getting married and my parents won't be able to attend my wedding. My soon to be father-in-law wears a turban because he is Sikh. He is going to walk me down the aisle, but I know it is usually considered inappropriate to cover your head in a church, but could this be an exception?
Updates
+1 y
Thank you guys! 😊😊😊
Can a Sikh wear a turban in a christian church?
Post Opinion