That was my first though, and so I tried that... but the sashes still clip through muh boobs.
Usually, if there's breast clipping, you need to scale the bust size down to 60% or so. Some Fed items have noticeable clipping over 50% (TNG badge is a rather obvious offender), but I haven't cataloged the bust size for stopping KDF-side clipping.
Part of the problem is that those items don't themselves scale properly to bust size... several of the ones that clip through a character with a high bust setting will have floating issues on small-chested characters.
funny, my female toons (so far two Orions and a joined trill) don't have that problem at all-then again, i try for a more "athletic" physique on my digital cheesecake than most guys who generate female characters (thus, mostly "B" cup proportions.)
"when you're out of Birds of Prey, you're out of ships."
Lol at most of the above.
But on topic, I have my Rihan gal with a more "normal" sized breasts (actually probably slightly smaller than average, I think I set the setting to like 15-20% of the way up, and that's it), and have no clipping of her sash on any uniform, at least not with the normal Rom, or the TOS one.
butcher suspect, "What'd you hit me with?"
Temperance Brennan, "A building"