Hi grapefruit, I am like you, Christmas Day for me and DH is a dress up day. Our DD fortunately feels the same so we all get dressed up. However the first year we spent with DD in-laws we were quite taken aback as they didn’t have the same thoughts of dressing up and turned up in jeans. DD and I were horrified as in our family going back to our parent’s days Christmas Day was always a special occasion which we dressed for. Nowadays though, like everything else it seems no-one seems to have that same sense of feeling about special days. For my part, if I were you I would dress the way you like, feel comfortable in and if anyone feels awkward let them, their problem not yours.??