Halloween // Costume ideas for my birthday!

My birthday is October 27th and this year I’m throwing a Halloween/birthday party. I’m looking for a costume that’s sort of birthday themed! For some context, I’m turning 25, and have longer red/blonde hair and want something still cute and fun and not gory. Some of my ideas were ‘death of my youth’ (funeral-esque theme) and 16 candles but would love some other ideas/inspiration (duo costumes welcome as well)