People describe conservative as old lady at church and sexy as ****ty, but there are more levels than that. If you look good in it, wear it. But remember that you wouldn't wear the sexy outfit to church.
Some people have different ideas about what good looking is. You may THINK you look SEXY in an outfit you like, but when other people see you in it, they don't think you look that great. You don't have to blend in with the crowd, but you don't have to be inappropriate for attention.
I don't wear mini skirts at my age, because I don't have sexy legs. I may see a few that look cute, but I would rather see them on my wife. I can take the advice of GG's to look my best. I am not offended when my wife tells me I look better in something else. If I am in love with something that isn't flattering, I can wear it at home.