Your mom clashes in my head
You need a plain suit.
Agreed on both counts, though I'm not sure too plain would be the way to go. Something flannel or with a good amount of texture would work. I think double breasted or a three piece would be best, something which hides a lot of the tie. I've seen it mentioned a few times, but with really large scale patterns, you don't want too much of the tie showing so as to avoid overwhelming the fit as a whole. I have a DB that would work in shape and texture, but it might be too close in lightness to the tie to work well. Something I'll try next time I wear the tie (which will be at least 10 months).