I'm not really into age-segregated dressing but this one makes me wonder...

I just ordered a denim vest from American Eagle because their denim jacket fits me so well: http://www.ae.com/web/browse/p.....at4260032#

I plan to wear it mostly over summer dresses. I have a couple that have spaghetti straps or similar and just aren't covered up enough for me for in public. But when I looked around Pinterest for pics of vests over dresses, I mostly just found pics of really young people wearing the look. Granted, most pics on Pinterest are of young people so maybe that's the reason...

So is this a decent plan for a 40 yr old MOTG?