A very sexy but feminine suspender belt I found is https://www.lovehoney.co.uk/lingerie/stockings-hosiery/suspender-belts-garters/p/exposed-lace-suspender-belt-in-white/a36672g67883.html
This is very cute and I feel it would look great on any man
A word of warning- avoid wet look - these can be unforgiving as my husband has tried loads in the past