Funeral Appropriate?

La

My family is not the type to be very serious, but I've always liked to dress nice. My intent isnt to be hot at a funeral, but I bought this dress and love it. I'm wonder anyone's thoughts on whether I can wear it to a family member's funeral (my aunt) that I'm expecting to go to soon. I haven't really been to many funerals and find it difficult to find something I like. Thoughts?

I'm getting a lot of 50/50. It's cold so I was planning on wearing it with a black cardigan and opaque black tights. I was unsure of my shoe choice, but I have no problem picking up a pair of flats (I dont currently have a pair).