Bike shorts recommendations for big thighs

I have big legs and I haven't found a decent pair of bike shorts that won't slip down as I bike. It's not very comfortable and even if I do enjoy showing off in the right context, I'm not a big fan of showing my plumber crack on bike lanes :P Anyone on here who's a spandex lover can recommand something for me ?

I have big thighs too and I will usually wear bib shorts for the same reason.

Thanks for your suggestion ! I bought a Craft bib shorts nano pro in the end. Just received them today. I'll try to post pictures soon ;)