This is a wonderfully comfortable, well-structured, no-slip strapless bra! I have worn it for a week straight now (without the straps) just to test it out really well. Once I position it where I want it, it does not budge. I fill it out perfectly (wonder of wonders), and it forms perfectly to my bust, leaving no visible lines. This is my first LulaLu purchase, and I look forward to buying more of their bras! It is so refreshing to actually wear a bra that fits my smaller bust well.