Lost black custom-tailored tuxedo jacket with a small tear on the inside lining at Belfast City Hall reception.

I lost my black tuxedo jacket while attending a wedding at the Belfast City Hall last Saturday. I believe it might have slipped off my chair during the reception. It has a small tear on the inside lining and is custom-tailored to fit me. If anyone has seen it, I would greatly appreciate its return as it holds a lot of sentimental value for me.