If calling attention to the body with fashion is untzniusdik, then we must rule out other things as well.
Let’s rule out snoods with sequins, tichels with gems that shine, anything pretty for that matter.
Let’s wear black tichels, black clothing….
As a matter of fact, how about we encourage young women in the parsha of shidduchim to do that?? Don’t dress attractively. It may be like wielding a knife if you do. Dress ugly and hope for the best.