Okay, so I finally caved and bought the PRETTYWELL Comfort Seamless Bra after seeing all the hype. And y'all... it actually lives up to it?!
First off, the fabric is SO soft. Like, 'why did I ever wear anything else' soft. It's this crazy lightweight material that somehow still gives decent support (I'm a 34C for reference).
The criss-cross back is genius - stays put all day but doesn't dig in. I've worn it under tank tops where the straps peek out and it actually looks cute instead of like underwear mishaps.
Washing tip: I threw mine in a delicates bag and it came out fine, though some reviewers swear by hand washing. The pads do that weird nipple dent thing though - minor annoyance but not dealbreaker.
Size note: Runs pretty true to size! I got M based on their chart and it fits perfectly. The band doesn't ride up which is my usual bra nemesis.
Honestly? Already planning to buy more colors. It's that perfect balance of 'actually supportive' and 'might as well be wearing nothing' comfort.