Tri Sigma as a whole does allow new members to wear letters. However, my chapter doesn't allow stitched letters to be worn until after initiation. Our new members do have shirts with screen-printed letters on them that they can wear when the initiated sisters are wearing letters. It's a campus-wide tradition at Longwood University that new members can't wear stitched letters or lavalieres or crests or anything like that. Nobody ever felt hazed by it though. Longwood's NPC orgs also have a tradition of initiated sisters wearing jumpers in their colors (as far as I know Longwood is the ONLY school that does this). It started of course with the original Longwood Four, and other sororities adopted it as they were chartered there (for example, ADPi wasn't founded there, but they wear the jumpers). The jumpers are another thing that new members can't wear until they're initiated... but personally I didn't even like wearing it AFTER I was initiated
